PR-1704IRE New Wave Mental Maths - 4th Class

Review sample

First published in 2002 by Prim-Ed Publishing
Revised 2017
Prim-Ed Publishing
Marshmeadows
New Ross
County Wexford
www.prim-ed.com
Copyright © Eddy Krajcar 2017
PR–1704
ISBN 978-1-92096-242-5
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Copyright Notice
No part of this book may be reproduced in any form or by any means, electronic or mechanical, including photocopying
or recording, or by any information retrieval system without written permission from the publisher.

New Wave Mental Maths is a series of seven pupil workbooks, written to provide a comprehensive and structured
daily mental maths programme for classes from Senior Infants to 6th Class. All strands and strand units of the
mathematics curriculum are covered. The series has been updated and revised. Contemporary colour and appealing
artwork have been added. Question types have been revised, reworded or rewritten. New to this edition is the
inclusion of a separate problem-solving column in each week’s unit of work, to enable teachers to focus on specific
problem-solving skills and strategies.
New Wave Mental Maths is designed to:
• provide complete coverage of all mental maths-related strands and strand units of the mathematics curriculum;
• encourage and develop mental calculation concepts and skills;
• constantly revise the different strands and strand units;
• develop and reinforce problem-solving strategies;
• develop and maintain speed of recall; and
• introduce, practise and consolidate a range of mathematical vocabulary and language.
Assessment activities are provided for pupils to assess, monitor and record their own performance on a weekly basis.
A separate Teachers Manual is available to accompany the New Wave Mental Maths series. This manual contains
guidelines to help develop mental strategies; suggestions for classroom use; assessment material; list of concepts
developed and answers for all the pupil workbooks.
Pupil Record Sheet........................................... iv–v
Week 1 ........................................................... 2–4
Week 2............................................................ 5–7
Week 3 ......................................................... 8–10
Week 4 ....................................................... 11–13
Week 5 ....................................................... 14–16
Week 6 ....................................................... 17–19
Week 7 ....................................................... 20–22
Week 8 ....................................................... 23–25
Week 9 ....................................................... 26–28
Week 10 ..................................................... 29–31
Week 11 ..................................................... 32–34
Week 12 ..................................................... 35–37
Week 13 ..................................................... 38–40
Week 14 ..................................................... 41–43
Week 15 ..................................................... 44–46
Week 16 ..................................................... 47–49
Week 17 ..................................................... 50–52
Week 18 ......................................................53–55
Week 19 ..................................................... 56–58
Week 20 ..................................................... 59–61
FOREWORD
CONTENTS
Week 21 ..................................................... 62–64
Week 22 ..................................................... 65–67
Week 23 ..................................................... 68–70
Week 24 ..................................................... 71–73
Week 25 ..................................................... 74–76
Week 26 ..................................................... 77–79
Week 27 ..................................................... 80–82
Week 28 ......................................................83–85
Week 29 ......................................................86–88
Week 30 ..................................................... 89–91
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Week 31 ..................................................... 92–94
Week 32 ..................................................... 95–97
Week 33 ................................................... 98–100
Week 34 ................................................. 101–103
Week 35 ................................................. 104–106
Week 36 ................................................. 107–109
Week 37 ................................................. 110–112
Week 38 ................................................. 113–115
Week 39 ................................................. 116–118
Week 40 ................................................. 119–121
Maths Facts ............................................ 122–127
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths iii

PUPIL RECORD SHEET
Date Date Date Date Date Date Date Date Date Date
Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10
M M M M M M M M M M
Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu.
W W W W W W W W W W
Th. Th. Th. Th. Th. Th. Th. Th. Th. Th.
PS PS PS PS PS PS PS PS PS PS
F F F F F F F F F F
Date Date Date Date Date Date Date Date Date Date
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Week 11 Week 12 Week 13 Week 14 Week 15 Week 16 Week 17 Week 18 Week 19 Week 20
M M M M M M M M M M
Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu.
W W W W W W W W W W
Th. Th. Th. Th. Th. Th. Th. Th. Th. Th.
PS PS PS PS PS PS PS PS PS PS
F F F F F F F F F F
iv New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PUPIL RECORD SHEET
Date Date Date Date Date Date Date Date Date Date
Week 21 Week 22 Week 23 Week 24 Week 25 Week 26 Week 27 Week 28 Week 29 Week 30
M M M M M M M M M M
Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu.
W W W W W W W W W W
Th. Th. Th. Th. Th. Th. Th. Th. Th. Th.
PS PS PS PS PS PS PS PS PS PS
F F F F F F F F F F
Date Date Date Date Date Date Date Date Date Date
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Week 31 Week 32 Week 33 Week 34 Week 35 Week 36 Week 37 Week 38 Week 39 Week 40
M M M M M M M M M M
Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu. Tu.
W W W W W W W W W W
Th. Th. Th. Th. Th. Th. Th. Th. Th. Th.
PS PS PS PS PS PS PS PS PS PS
F F F F F F F F F F
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths v

MONDAY
TUESDAY
Week 1
1. What is the time?
2. 4 + 5 =
3. This shape is a
4. 4 × 5 =
hexagon.
pentagon.
square.
5. 20 ÷ 4 =
12
11
10
9
8
7
6
1
2
3
4
5
6. Write the numeral three hundred and three.
7. 1,000 + 100 =
8. 3 × 4 = 4 ×
9. This shape is a .
10. How many sides has an octagon?
11. 6 + 6 + 6 =
12. 145c = €
13. What is the value of the 4 in 473?
4 40 400
14. 70 minutes = hour(s) minute(s)
15. 3 + < 5
16. Which is longer, 1 m or 80 cm?
17. 10 × 27 =
18. Flip a coin. It has a in chance
of landing on ‘heads’.
19. 13 – 9 =
20. 8:22
minutes past
1. What is the time?
2. 10 – 6 =
3. 1,000 + 10 =
4. 3, 4, 6, 9, , 18
5. 12 ÷ 3 =
11
10
9
8
7
12
6
1
2
3
4
5
6. Write the numeral one thousand and one.
7. 5 × 2 = 2 ×
8. €5.00 – €3.50 = €
9. This shape is a
hexagon.
pentagon.
square.
10. How many sides has a pentagon?
11. 220c = €
12. 4 + < 8
13. The value of the 9 in 397 is .
14. This shape is an .
15. Which is heavier, 1 kg or 700 g?
16. 15 – 7 =
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17. 3 × 6 =
18. 11:08
19. 4 + 4 + 4 =
minutes past
20. 75 minutes = hour(s) minute(s)
2 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. What is the time?
2. 3 × 4 =
3. 405c = €
4. 9 ÷ 3 =
5. This shape is a/an
octagon.
pentagon.
hexagon.
11
10
9
8
7
12
6
1
2
3
4
5
6. Write the numeral one thousand one hundred.
7. 3:12
minutes past
8. 600 + 30 + 7 =
9. 2, 4, 8, 16,
10. 10 × 24 =
11. Flip a coin. It has a in chance
of landing on ‘tails’.
12. 85 minutes = hour(s) minute(s)
13. 5 + < 8
14. Which is lighter, 200 g or 2 kg?
15. 12 – 7 =
16. 1,000 + 10 + 1 =
17. What is the value of the 3 in 1,362?
18. 14 ÷ 2 =
30 300 3,000
19. 5 + 5 + 5 =
20. 7 × 3 = 3 ×
1. What is the time?
2. 11 – 5 =
11
10
9
8
7
3. This shape is a .
4. 690c = €
5. How many sides has an octagon?
6. €10.00 – €3.50 = €
7. 5, 10, 20, 40,
8. 15 ÷ 3 =
9. 9 × 5 = 5 ×
10. This shape is a
11. 7 × 5 =
square.
hexagon.
parallelogram.
12. 5 + < 7
13. 7 + 7 + 7 =
14. 3:21
minutes past
15. Write the numeral one thousand.
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16. 4 + 7 =
17. 700 + 50 + 4 =
12
6
1
2
3
4
5
18. 90 minutes = hour(s) minute(s)
19. What is the value of the 8 in 218?
8 80 800
20. Which number is nearer to 1,000?
1,020 989
Week 1
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 3

PROBLEM-SOLVING
FRIDAY REVIEW
Week 1
Monday
1. Which of the three
triangles is equal
to half the area of the
square?
2. Triangle A is
1
4
1
3
Tuesday
1. The distance between
the towns is
km.
1
2 of the square.
2. Dad went to Rigby and returned the same
day. Mum went to Benly and returned the
day after. How far did Mum and Dad travel
in total?
km
Wednesday
Make the numbers across and down total 12.
1. Use 3, 4, 5 and 8.
2. Use 2, 3, 7 and 9.
Thursday
Colour the correct signs.
1. 4 × 7 kg 9 × 3 kg
A
B
C 1. What is the time?
120 km Benly
60 km Rigby
2. 4 × 3 =
3. 11 – 5 =
4. Which is longer, 90 cm
or 2 m?
5. 12 ÷ 3 =
6. This shape is a
hexagon.
pentagon.
square.
7. €10.00 – €4.50 =
€
11
10
9
8
7
8. 10, 20, 40, , 160
9. 600 + 50 + 2 =
10. What shape
is this?
11. 159c = €
12. 10 × 48 =
13. 30 + 4 + 8 =
14. Which is heavier, 2 kg or
400 g?
16. 8 + 8 + 8 =
17. Natasha and Sonia read
9 books in a week.
Sonia read twice as
many books as Natasha.
How many books did
Sonia read?
18. 90 minutes =
hour(s)
minute(s)
19. What is the value of the
9 in 397?
9 90 900
20. 4 + < 6
21. 15 – 7 =
22. Flip a coin.
It has a
in
chance of
landing on ‘heads’.
23. Write the numeral one
thousand and thirty.
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12
6
1
2
3
4
5
24. 10:02
25. 3 × 6 =
minutes past
15. This shape is an
2. 4 × 9 kg 6 × 6 kg
.
4 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. What is the time?
2. 5 × 9 =
11
10
9
8
7
12
6
1
2
3
4
5
1. What is the time?
2. 12 – 9 =
3. 9 + 9 + 9 =
11
10
9
8
7
12
6
1
2
3
4
5
Week 2
3. This shape is a .
4. 100, 75, 50,
5. 1 hour = minutes
6. 50 ÷ 5 =
4. 900 + 50 + 4 =
5. 80, 40, 20,
6. Write the numeral one thousand and fourteen.
7. 24 ÷ 4 =
8. 7 + 7 + 7 =
9. This shape is a .
10. 2 × 5 = 5 ×
11. 1 kg = g
12. 70 + 7 + 4 =
13. 5:18
14. 12 – 7 =
minutes past
15. How many sides has an octagon?
16. 50 – 15 =
17.
Measure this line in cm.
cm
18. 1 m = cm
19. 4 + < 8
20. €10.00 – €8.50 = €
7. 4 × 8 =
8. 10 × 24 =
9. This shape is a .
10. What is the cost of 2 kg of bananas at
€1.50 per kg?
€
11. 800 + 20 + 4 =
12. 60 + 6 + 7 =
13. How many sides has a hexagon?
14.
Measure this line in cm.
cm
15. This shape is a
cuboid.
rhombus.
rectangle.
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16. 6 × 3 = 3 ×
17. 3 + < 7
18. 7:27
minutes past
19. €10.00 – €3.90 = €
20. 859c = €
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 5

WEDNESDAY
THURSDAY
Week 2
1. What is the time?
2. 27 ÷ 3 =
3. Write the numeral one thousand and seven.
4. 500, 350, 200,
5. 41 × 10 =
6. 700 + 80 + 4 =
7. €5.00 – €1.90 = €
8. This shape is a .
9. How many sides has a rhombus?
10. 900c = €
11. 8 + 8 + 8 =
12. Roll a dice. There is a in
chance of it landing on 2.
13. 1 = m
14. 40 + 7 + 5 =
15. 7 × 4 = 4 ×
16.
Measure this line in cm.
cm
17. 2 + < 5
18. How many tens go into one hundred?
19. How many sides has a pentagon?
20. 12:05
minutes past
11
10
9
8
7
12
6
1
2
3
4
5
1. What is the time?
2. How many sides
3.
has a parallelogram?
Measure this line in cm.
4. 7 + 8 =
cm
5. 1,000 , 500 , 250 ,
6. €5.00 – €3.90 = €
7. 45 ÷ 9 =
8. 505c = €
9. 6 + 6 + 6 =
10. 10:13
minutes past
11. Roll a dice. There is a in
chance of it landing on 6.
12. 80 + 9 + 4 =
13. 3 + < 9
14. This shape is an .
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15. 8 × 5 = 5 ×
16. 1 km = m
17. 13 – 8 =
18. 900 + 70 + 1 =
19. 40 – 15 =
20. 1,000 + 90 + 300 =
6 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Shay had many 20c coins. He used €1.60 to
buy a chocolate bar. He had €1.20 left. What
was the amount at the start?
€
2. How many coins did he start and end with?
start: coins end: coins
Tuesday
1. Bronagh has 2 songs on her device. One
song is 3 minutes long. The other song is
twice as long as the first. What is the total
song time?
minutes
2. The two songs cost her €3. One song cost
her twice as much as the other. What was
the price of the more expensive song?
€
Wednesday
1. To make a metre using 20-cm rods, you
need
rods.
2. To make a metre using 50-cm rods, you
1.
2.
need
rods.
Thursday
Complete the patterns.
11
10
9
8
7
12
6
1
2
3
4
5
1. What is the time?
2. 600, 450, 300,
3. 14 – 9 =
4. 10 × 39 =
5. 4 × 8 =
6. 1,000 + 30 + 600 =
7. 45 ÷ 5 =
8. 800 + 300 + 5 =
9. 3 × 9 = 9 ×
10. 1 kg = g
11. 60 – 15 =
12. €10.00 – €8.90 =
€
13. 8:23
minutes past
14. How many sides has a
pentagon?
15. 4 + < 9
16. 27 ÷ 9 =
17. 8 + 8 + 8 =
18. 860c = €
19. Name this shape.
20. 1 km = m
21. Roll a dice. There is a
in
chance of it landing on 5.
22. How many tens go into
four hundred?
23. What is the cost of
4 kg of potatoes at 50c
per kg?
€
24. If Marissa and Angie
cycled 60 km in a week
and Marissa cycled
twice as much as Angie,
how far did Marissa
cycle?
km
25. Measure this line in cm.
Review sample
cm
Week 2
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 7

MONDAY
TUESDAY
Week 3
1. What is the time?
2. 18 ÷ 3 =
3. This is a .
1. What is the time?
2. This is a
.
4. 7 + 9 =
5. 2,000 + 500 + 40 + 3 =
6. 15 – 9 =
7. 6 × 9 =
8. What is the value of the 9 in 9,076?
9 900 9,000
9. 6 + < 10
10. 10, 30, 90,
11. 8 × 6 = 6 ×
12. 60 + 6 + 7 =
13. What is the perimeter of this rectangle? 10. 989c = €
cm
4 cm
14. Is N symmetrical?
8 cm
15. 1 1 2 km = m
16. How many sides has a parallelogram?
17. Halve 30.
18. 11 + 11 + 11 =
19. €5.00 – €2.20 = €
20. Round 27 to the nearest ten.
3. 5 × 9 = 9 ×
4. 8 + 9 =
5. 5 + < 8
6. 45, 50, 60, 75,
7. 36 ÷ 4 =
8. Calculate the perimeter of
this triangle.
cm
9. 30 + 300 + 9 + 3,000 =
11. 2:14
minutes past
12. Is S symmetrical?
13. 28 = 5 × 7
True
False
12 cm
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7 cm
14. 9 × 10 =
15. Which number is nearer to 1,000?
850 1,050
16. 5,000 + 300 + 90 + 2 =
17. 5 × 8 =
18. €5.00 – €1.20 = €
19. What is the value of the 8 in 2,817?
80 800 8,000
20. How many sides has a pentagon?
8 cm
8 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. What is the time?
2. 4,000 + 300 + 70 + 2 =
3. €10.00 – €4.10 = €
4. 3 1 2 kg = g
5. This is a .
6. 8 + 4 =
7. 42 ÷ 6 =
8. Calculate the perimeter of a square with
7-cm sides.
cm
9. Make €1.65 using only 4 coins.
10. 50 + 7 + 7 =
11. Is B symmetrical?
12. 7 + < 10
13. 740c = €
14. 6 × 4 = 4 ×
15. 1,000 + 100 + 10 + 1 =
16. 11:21
17. 7 × 4 =
minutes past
18. How many kilograms of salt would you get if you
spent €18.00 and the salt cost €2.00 per 10 kg?
kg
19. Which number is nearer to 1,000?
1,080 980
20. How many quarters are in 1 unit?
1. What is the time?
2. 6 + < 9
3. What is the perimeter?
cm
4. 10 × 4 = 4 ×
5. €10.00 – €8.10 = €
6. 8 + 6 =
7. 21 ÷ 3 =
8. 5 1 2 m = cm
9. Share €10.00 equally among 4 children.
€ each
10. 849c = €
11. Is A or F symmetrical?
12. 1,000 , 700 , 400 ,
13. 3,000 + 700 + 20 + 3 =
14. This is a
15. How many sides has an octagon?
Review sample
16. 20 + 9 + 7 =
17. 6 × 4 =
18. 300 + 1,000 + 20 =
.
5 cm
19. How many tens go into three hundred?
20. Round 415 to the nearest ten.
9 cm
9 cm
Week 3
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 9

PROBLEM-SOLVING
FRIDAY REVIEW
Week 3
1. What is the time?
2. 3,000 + 400 + 80 + 9
=
3. 7 + 9 =
16. 890c = €
17. Which number is nearer
to 1,000?
18. 11:02
988 1,010
Monday
1. The total of both items was € .
2. What was the kilogram price of the tomatoes?
€ per kg
Tuesday
1. What was the kilogram price of the potatoes?
€ per kg
2. What was the date a week before the date
on the receipt?
Wednesday
1. After leaving Frank’s shop, Mr Murphy
went to visit his grandmother. He arrived at
midday. How long since he left the shop?
hour(s) and
minute(s)
2. Mr Murphy goes to Frank’s Fruit and Veg
weekly. When is the next expected visit?
Thursday
1. Mr Murphy used a €50 note and a €20
note. What was his change?
€
2. The shopkeeper only had €1 and €2 coins
in the till. What is the smallest number of
coins the shopkeeper could have given
Mr Murphy as his change?
€1 €2
4. 90 + 6 + 8 =
5. €10.00 – €8.10 =
10 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class
€
6. 6 + < 10
7. What is the value of
the 5 in 2,516?
8. Which number is nearer
to 1,000?
875 1,015
9. 8 × 5 = 5 ×
10. How many sides has a
parallelogram?
11. 2,200 g < 2 1 2 kg
True
False
12. 1,000 , 800 ,
1,200 , 1,000 ,
1,400 ,
13. 4 1 2 m = cm
14. 3 × 8 =
15. Name this shape.
past
minutes
19. This shape is a
20. €5 – €2.30 =
€
21. Halve 50.
22. 4 × 6 =
23.
What is the perimeter?
cm
24. Share €8.40 equally
among 4 boys.
€ each
25. 752c = €
11 cm
12 cm
Review sample
4 cm
.

MONDAY
TUESDAY
1. What is the time?
2. 6 × 8 =
3. 9 horses have legs.
4. 8,000 + 200 + 40 + 9 =
5. 42 ÷ 5 = r
6. 0.7, 0.8, 0.9,
7. 3.4 > 2.9
True
8. 2 × 8 = 8 ×
9. This shape is a
False
10. Write the numeral seven thousand and seven.
11. 2.1 m = cm
12. What is the number before 9,090?
13. What is the perimeter of a square with 8-cm
sides?
cm
14. Which letter is not symmetrical?
15. 21 – 9 =
B F T
16. What is the place value of the 4 in 2.4?
17. Eight days after the 7th of April is
18. Which dots draw a rhombus?
5
1
19. 0.4 – 0.2 =
4 3
A
20. 60 + 7 + 8 =
2
.
1
5
.
4 3
B
2
1. What is the time?
2. 2,000 , 1,600 , 1,200 ,
3. Which number is nearer to 1,000?
1,350 850
4. 5,000 + 300 + 90 + 7 =
5. 0.4, 0.6, 0.8,
6. 25 ÷ 8 = r
7. 3.1 > 2.8
True
False
8. Which type of triangle is this?
right-angled
isosceles
9. What is the perimeter?
cm
equilateral
scalene
10. Write the numeral three thousand and twenty-five.
11. What shape is this?
12. 6 × 7 = 7 ×
13. What is the place value of the 3 in 2.3?
14. A week before the 9th of July is
15. Round 639 to the nearest hundred.
16. 3.1 km = m
17. 0.6 + 0.2 =
18. What is the number after 3,999?
19. 40 + 7 + 9 =
8 cm
10 cm
Review sample
4 cm
20. How many sides has a parallelogram?
.
6 cm
Week 4
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 11

WEDNESDAY
THURSDAY
Week 4
1. What is the time?
2. 17 – 8 =
3. Write the numeral nine hundred and ninety-nine.
1. What is the time?
2. This is a .
4. 7,000 + 500 + 30 + 6 =
5. A decade before 1900 is .
6. 0.1 + 0.1 =
7. 37 ÷ 7 = r
8. 6 × 8 = 8 ×
9. 2.2 < 2
True False
10. This is a .
11. 1.1 kg = g
12. What type of triangle?
Z S K
13. Round 747 to the nearest hundred.
13. How many 5s go into 100?
14. A fortnight before the 27th of June is
14. What is the place value of the 0 in 9.0?
.
15. What is the place value of the 7 in 2.7?
15. €10.00 – €6.80 = €
16. A fortnight after the 17th of January is
17. 1 = m
3. Round 53 × 9.
50 × 9 60 × 9
4. 8 + 7 =
5. 0.5 – 0.1 =
6. 9,000 + 200 + 70 + 5 =
7. 12 × 4 =
8. 43 ÷ 9 = r
9. 7 × 8 = 8 ×
10. What type of triangle?
11. What is the number after 2,799?
12. Which letter is symmetrical?
Review sample
16. 4.1 > 4
.
True False
17. Round 371 to the nearest hundred.
18. Share €12.00 equally among 5 shoppers.
€ each
18. 8 + 8 + 8 + 8 =
19. 9 + 9 + 9 + 9 =
20. 230 – 70 =
19. 220 – 60 =
20. €10.00 – €3.80 = €
12 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. What is the chance of
landing on an even
number?
in
2. Each colour is
what fraction of the spinner?
Tuesday
A B C
5
0 3
3 1 6 2 2
6
1. Which spinner is certain of
landing on the sum of 7?
2. Dave had 1 3 of €90. Steve had 1 5 of €100.
Who had more money?
Wednesday
1. Jess has more apps than Mia.
2. The total number of apps is .
1.
4
PHONE APPS
Jess
Tess
Mia
2
5
4
Thursday
Complete the patterns.
1
2 3
5 4
4
1
6
= 2 = 1
3
5
1. What is the time?
2. What is the number
after 1,899?
3. 2.3 > 2
True
False
4. 9,000 + 300 + 60 + 2
=
5. 7 × 8 =
6. 2.1 km = m
7. Write the numeral one
thousand and ten.
8. 3 × 9 = 9 ×
9. Round 62 × 9.
60 × 9
70 × 9
10. 12 × 4 =
11. 0.7, 0.8, 0.9,
12. 73 ÷ 10 =
13. €10.00 – €7.80 =
€
14. What is the name of
this triangle?
r
16. 320 – 50 =
17. How many sides has a
rhombus?
18. 0.7 – 0.3 =
19. A fortnight before the
31st of March is
20. 0.6 + 0.3 =
21. Name this shape.
22. Round 789 to the
nearest hundred.
23. What is the name of
this triangle?
24. How many kilograms
of potatoes would you
have if they cost €4.50
per 5 kg and you spent
€45.00?
Review sample
kg
25. What is the place value
of the 4 in 2.4?
.
Week 4
1 2 1 3 1 4 1 5
4 3 7 5 10 7 13 9
2.
2 1 4 2 8 4 32 16
3 4 6 8 12 16 48 64
15. 3.2 > 3
True
False
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 13

MONDAY
TUESDAY
Week 5
1. What is the time?
2. 70 – 4 =
3. 100 × 8 =
4. 12 × 7 =
5. 4.2 km = m
6. 0.7, 0.8, 0.9,
7.
Measure this line in cm.
8. This triangle is an
triangle .
cm
9. 75 minutes = hour(s) minute(s)
10. Which number is nearer to 2,000?
2,495 1,795
11. Write the numeral one thousand and eighty-nine.
12. 38 ÷ 6 = r
13. This is a net of a
cube.
pyramid.
14. 1 – 0.1 =
15. A week before the 7th of October is
16. At 40c per apple, what will you pay for 8 apples?
€
17. How many angles has an octagon?
18. What is the perimeter?
cm
19. 9 × 10 = 10 ×
20. 0.7 + 0.3 =
.
1. What is the time 1 1 2 hours before midnight?
2. 23 – 8 =
:30 a.m. p.m.
3. €10.00 – €8.70 = €
4. 6.2 kg = 6,020 g 620 g
5. 9 × 6 =
6. , 0.9, 0.6, 0.3
7. 11 × 100 =
8. 5:01
62 g 6,200 g
minute past
9. Which number is nearer to 6,500?
6,515 6,489
10. This is a net of a
prism.
11. 1 – 0.3 =
12. This is a
rectangle.
parallelogram.
rhombus.
pyramid.
13. A week after the 24th of April is
14. This shape is a .
Review sample
5 cm
9 cm
12 cm
7 cm
15. What is the area of this 3 by 3 grid?
16. 4.5 > 3.8
True
squares
False
17. 6 × 3 = (3 × ) + (3 × ) = 18
18. 41 ÷ 9 = r
19. 90 minutes = hour(s) minute(s)
20. 0.9 + 0.1 =
.
14 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. What is the time?
2. Write the numeral one thousand and eleven.
3. 2.7, 2.8, 2.9,
4. A week before the 7th of August is
5. A dice is in the shape of a
6. 42 – 7 =
.
7. 80 minutes = hour(s) minute(s)
8. This triangle is a
9. 7:17
minutes past
10. This is a net of a
11. 1 – 0.4 =
.
triangle.
12. Round 5,820 to the nearest thousand.
13. An octagon has sides.
14. 80 + 7 + 8 =
15. 954c = €
16. What is the area of this 4 by 3 grid?
squares
17. Rather than counting all the squares, what is an
easier way of finding the area?
.
1. What is the time?
2. Measure this line.
cm
3. Colour the parallelogram red and the rhombus
green.
4. €10.00 – €4.70 = €
5. 73 – 8 =
6. 75 minutes = hour(s) minute(s)
7. , 9.9, 9.7, 9.5, 9.3
8. 3:25
9. 2 × 9 = 9 ×
minutes past
10. This is a net of a
11. 1 – 0.8 =
12. What is the coloured shape?
13. 9.3 > 8.8
True
False
14. What is the perimeter?
Review sample
A
cm
15. Which type of triangle is in Question 14?
isosceles
scalene
.
right-angled
equilateral
16. What is the area of a grid 7 cm by 4 cm?
B
5 cm
C
7 cm
7 cm
Week 5
18. 8 × 7 = 7 ×
19. 0.6 + 0.4 =
20. Share €20.00 equally among 8 children.
€ each
cm 2
17. 8 + 8 + 8 + 8 =
18. 0.5 + 0.5 =
19. 103 ÷ 10 = r
20. 3 × 9 = 24 True False
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 15

PROBLEM-SOLVING
FRIDAY REVIEW
Week 5
Monday
1. Mia and Anna have 9 bracelets altogether.
Mia has twice as many as Anna. How many
bracelets does Anna have?
1. 9.2, 9.4, 9.6,
2. Round 3,491 to the
nearest thousand.
15. 5 × 6 = 6 ×
16. 52 – 7 =
5 cm
7 cm
2. Mr Jones looked at his phone. It showed
7.40 a.m. on Wed. 1st Dec. He needs 3 4 of
an hour to shop. It takes him 10 minutes to
walk from his car and back.
Will he get a parking fine?
Tuesday
1. A family of four each bought the same
ticket. What was the total cost?
€
2. How long did their journey take?
Wednesday
Mr Nolan went shopping.
1. The kilogram price
of the apples was
€ .
2. The kilogram price
of the pears was
€ .
PASSENGER
FARE
Thursday
1 HOUR MAX
MON. – FRI.
7.30 A.M. – 6 P.M.
Use the receipt from Wednesday.
1. In 48 hours, the day and date will be
2. In 72 hours, the day and date will be
Direct Travel
DEPARTING ARRIVING
Dublin Cork
14 Oct. 14 Oct.
1 p.m. 4.30 p.m.
.
.
3. 0.7 + 0.3 =
4. , 9.5, 9.0, 8.5
5. 1 – 0.4 =
6. Measure this line.
cm
7. Write the numeral one
thousand and sixtythree.
8. €10.00 – €3.40 =
€
9. 12 × 7 =
10. This is a net of a
23. Share €50.00 equally
among four 4th Class
pupils.
cuboid.
square-based pyramid.
cube.
€
24. 750c = €
each
11. How many sides has an
octagon?
12. If apples cost €6.00 per
kg, what would 3 1 2 kg
cost?
€
13. 3.7 km = m
14. 80 minutes =
hour(s)
minute(s)
11 cm
17. What is the name
of this triangle?
18. The perimeter of the
above triangle is
19. 100 × 32 =
cm.
20. 93 ÷ 9 = r
21. A week before the
7th of December is
22. What is the area of
a grid 3 cm by 9 cm?
25. 5:21
Review sample
cm 2
minutes past
.
16 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. What was the time
ten minutes before?
2. What is the coloured shape?
1. What was the time
ten minutes prior?
11:00 8:00
2. What is the area of a grid 2 cm by 4 cm?
Week 6
cm 2
3.
Measure this line.
cm
4. €10.00 – €4.40 = €
5. , 0.9, 0.5, 0.1
6. Write the numeral one thousand,
four hundred and seventy-five.
7. 0.5 + 0.7 =
8. 6,000 + 300 + 70 + 2 =
9. 5 + > 8
10. 23 – 9 =
11. Roll a dice. There is a in
chance of it landing on 3.
12. 1 – 0.2 =
13. What is the area of a grid 7 cm by 5 cm?
14. 3.1 < 2.9
True
cm 2
False
15. Which number is nearest to 9,000?
8,650 9,395 9,090
16. How many tens in five hundred and sixty?
17. A week before the 6th of September is
18. 8 × 7 = 56
True
False
19. 4 m 70 cm = cm = . m
20. 1 = m
.
3. Write the numeral one thousand,
one hundred and eleven.
4. €10.00 – €6.30 = €
5. Draw a hexagon.
6. 8.7, 9.2, 9.7,
7. Write 2 symmetrical capital letters.
8. 43 – 8 =
9. This is a net of a
10. 5 70 = , 10 140 =
11. 8,000 + 500 + 40 + 7 =
12. 0.7 + 0.8 =
13. A week after the 24th of April is
14. Share €50.00 equally among 4 teachers.
€ each
Review sample
15. What is the place value of the 8 in 12.8?
16. 9 × 7 =
17. 4 + > 6
18. Roll a dice. There is a in
chance of it landing on an odd number.
19. 2 – 0.3 =
20. 8.2 < 9
True
False
.
.
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 17

WEDNESDAY
THURSDAY
Week 6
1. What will be the time
ten minutes after?
2. €10.00 – €9.70 = €
3. 6 + > 10
4. 10, 30, 90, , 810
5. Complete the missing half. (Use a ruler.)
6. What is the area of a grid 7 cm by 10 cm?
cm 2
7. Circle the numbers that are symmetrical.
1 2 3 4 5 6 7 8 9 10
8. 62 – 9 =
9. Roll a dice. There is a in
chance of it landing on an even number.
10. This is a net of a
11. 0.9 + 0.7 =
12.
Measure this line in cm.
13. 11 × 12 =
.
cm
14. 7 km 500 m = m = . km
15. 7,000 + 300 + 80 + 4 =
16. Which number is nearer to 1,500?
1,545 1,470
17. What is the number before 1,890?
18. 5 80 = , 10 160 =
19. 3 – 0.6 =
20. 70 + 60 =
1. What will be the time
ten minutes after?
5:50 1:50
2. What is the place value of the 4 in 4,279?
3. Which dots will draw a parallelogram?
5
1
4. 0.8 + 0.9 =
5. 60, 90, 70, 100, 80,
6. 7 + > 9
7. 198c = €
8. €5.00 – €2.70 = €
9. Is an isosceles triangle symmetrical?
10. 80 + 50 =
11. How many fives go into one hundred?
12. 12 × 9 =
13. 7 m 40 cm = cm = . m
14. Roll a dice. There is a in
chance of it landing on 7.
15. 72 – 8 =
16. 9,000 + 700 + 30 + 8 =
17. 5 – 0.8 =
4 3
A
18. 90 + 7 + 9 =
19. What is the number after 1,699?
20. This is a net of a
.
2
1
5
4 3
Review sample
B
2
18 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. The difference between two numbers is
4. The sum of the numbers is 14. The two
numbers are
and .
2. The difference between two numbers is
5. The sum of the numbers is 11. The two
numbers are
and .
= 2
= 1
Tuesday
1. The number of 4th Class children who like
going to the cinema is the same as the sum
of which two activities?
and
2. This 4th Class has 30 pupils.
How many were not asked?
Wednesday
1. A tray can hold 12 bread rolls. The baker
puts 4 trays in the oven. There are
bread rolls in the oven.
2. The baker adds jam to 1 4 of 36 scones. How
many scones have jam?
Thursday
1. What is the mystery shape? It is a 3-D
shape. It has 5 faces. It has 8 edges. It has
5 vertices. It is a
2. Draw hands
to show
3 1 2 hours later.
Cinema
Camping
Judo
Dancing
11
10
9
8
7
12
6
1
2
3
4
5
11
10
9
8
7
12
6
1
2
3
4
5
.
1. What was the time
10 minutes before?
2. 7,000 + 400 + 30 + 8
=
3. €10.00 – €7.80 =
€
4. 5 + > 7
5. Measure this line.
6. 5 90 =
7. 4 – 0.4 =
cm
8. Roll a dice. There is a
in
chance of it landing on 5.
9. 8 × 7 =
10. 0.8 + 0.4 =
11. 42 – 9 =
12. Which number is nearer
to 3,000?
2,960 3,030
13. Is an equilateral triangle
symmetrical?
14. What is the area of a
grid 3 cm by 6 cm?
cm 2
15. 80 + 6 + 9 =
3:00
16. 4.8 km = m
17. The change given to
eight customers was
€10, and
each. What was the
total?
€
18. 6.9 m = cm
19. This is a net of a
cube.
cuboid.
20. 765c = €
21. How many kilometres
will you have cycled if
you travel 3,800 m?
km
22. Write two symmetrical
numbers under 10.
23. What is the date a
week before the 6th of
December?
24. Draw a parallelogram.
Review sample
25. Write the numeral two
thousand, six hundred
and eighty-nine.
Week 6
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 19

MONDAY
TUESDAY
Week 7
1. What was the time
5 minutes before?
2. 1.0 – 0.9 =
3. This is a .
4. 6 + 7 =
5. 230 – 50 =
6. €20.00 – €5.80 = €
7. 0.8 + 0.8 =
8. What is the place value of the 3 in 3,217?
9. Tick the correct box. The angle of the
fish’s mouth is
< a right angle.
> a right angle.
= a right angle.
10. 100 × 77 =
11. 7 km 300 m = m = . km
12. 3.2 < 2.8
True
False
13. This triangle is an
14. 37 – 9 =
15. 4 840 = 2 420 =
16. 1.0 + 0.9 =
17. A week before the 6th of August is
18. In this pie chart, what
fraction of children
liked chocolate
ice cream?
triangle.
19. 200 , 400 , 800 , , 3,200
20. 3,000 + 800 + 90 + 4 =
CHOCOLATE
VANILLA
2:00
.
1. What was the time
5 minutes prior?
2. How many angles has an octagon?
3. What is the area of a grid 6 cm by 7 cm?
cm 2
4. 0.9 + 0.3 =
5. 4 820 = 2 410 =
6. 2.2 – 0.8 =
7. 4 kg 200 g = g
8. What shape is this?
9. 36 × 100 =
10. This is a .
11. A week after the 25th of January is
12. 23 – 9 =
13. 9,000 + 400 + 20 + 9 =
14. In this pie chart,
what fraction liked
vanilla ice cream?
15. How many tens go into one thousand?
16. Round 6,394 to the nearest thousand.
17. 5:38
minutes to
18. 5, 11, 9, 15, 13, 19, 17,
19. 420 – 70 =
20. €20.00 – €7.20 = €
CHOCOLATE
VANILLA
6:00
Review sample
STRAWBERRY
STRAWBERRY
.
20 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. What will be the time
five minutes after?
2. 5,000 + 700 + 30 + 1 =
3. 999c = €
4. 4 – 0.3 =
5. How many angles has a rhombus?
6. 53 – 6 =
7. 3.3 – 0.7 =
8. 7 + > 9
9. 320 – 40 =
10. Draw an oval.
11. Jim has 15 scones to arrange into 3 rows.
Complete the number sentence.
15 = 3 ×
12. What is the area of a grid 7 cm by 8 cm?
cm 2
13. 10:53
14. 60 + 50 =
15. 0.4, 0.6, 0.8,
minutes to
16. Roll a dice. There is a in
chance of it landing on a number higher than 4.
17. 1 = m
18. What fraction of
children liked
strawberry ice cream?
19. €20.00 – €6.80 = €
20. 7 + < 8
CHOCOLATE
VANILLA
STRAWBERRY
4:55
1. What will be the time
five minutes later?
2. What fraction of children
liked chocolate and
strawberry ice cream?
3. 1 10 of a number is 11. Find the number.
4. 2 – 0.4 =
5. Is a scalene triangle symmetrical?
6. Mark the right angle in this triangle.
7. 6.3 – 0.9 =
8. 250 – 80 =
9. Tara has 21 scones to arrange into 3 rows.
Complete the number sentence.
21 = 3 ×
10. 8:42
11. 854c = €
minutes to
12. 2 m 20 cm = cm = . m
13. 1.7, 1.8, 1.9,
14. What is the perimeter of a rectangle
12 m by 8 m?
m
15. Roll a dice. There is a in
chance of it landing on a number lower than 4.
16. €20.00 – €12.50 = €
17. 90 + 8 + 7 =
18. 12 × 11 =
19. 50 + 70 =
20. 4,000 + 700 + 50 + 5 =
CHOCOLATE
VANILLA
9:55
STRAWBERRY
Review sample
Week 7
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 21

PROBLEM-SOLVING
FRIDAY REVIEW
Week 7
Monday
Make the numbers across and down total 12.
1. Use 4, 2, 6 and 10.
2. Use 3, 4, 5 and 9.
Tuesday
1. To make 12 metres using 25-cm rods, you
need
rods.
2. To make 8 metres using 25-m rods, you
need
rods.
Wednesday
Dad bought how many kilograms of
1. apples?
2. pears?
Thursday
Use the receipt from Wednesday.
1. Dad gave a €50 note. What change did he
receive?
€
SALE!
2. It is 8.48 a.m. Dad’s phone alarm is set
for 9.00 a.m. How many minutes before it
beeps?
1. What was the time 5
minutes before?
2. €20.00 – €7.40 =
€
3. 60 + 90 =
4. 7 – 0.2 =
5. What is the date a
week before the 6th of
October?
6. Name a four-sided 2-D
shape.
7. 230 – 60 =
8. How many tens go into
a thousand?
9. 4 600 = 2 300 =
10. Is this triangle
symmetrical?
Yes
No
11. 0.4, 0.8, 1.2, 1.6,
12. 22 – 9 =
13. Round 7,570 to the
nearest thousand.
14.
3 cm
4:00
5 cm
4 cm
1
4 of a number is 11.
Find the number.
15. 6 km 400 m
= m
= . km
16. €20 – €11.20 =
€
17. In the pie chart, what
fraction of children
liked cakes?
18. Tick the correct box.
The angle of the fish’s
mouth is
< a right angle.
> a right angle.
= a right angle.
19. 6 × 2 × 100 =
20. 100 × 82 =
21. Order from smallest to
largest.
1 1 2 1 1 1 4 1.9
, , ,
22. 3,000 + 200 + 80 + 6
=
23. What is the area of a
grid 7 cm by 5 cm?
24. 2:32
cm 2
CAKES
BISCUITS
CRISPS
Review sample
minutes past
25. 340 cm = . m
22 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. What was the time 1 4 of an hour
before?
2. 6,000 + 800 + 40 + 3 =
3. 75 minutes = hour(s) minute(s)
4. 90 + 60 =
5. Write the numeral four thousand and forty-four.
6. €20.00 – €11.30 = €
7. 9 km 700 m = m = . km
8. 5 100 = 10 200 = 1
9. Are these lines vertical?
Yes
No
10. 24 ÷ 6 = (12 ÷ 6) + ( ÷ 6) = 2 + 2 = 4
11. 1 – 0.9 =
12. 0.7 + 0.3 =
13. What type of
triangle is this?
14. The perimeter of the above triangle is
15. 1,255c = €
cm.
16. Which number is nearer to 7,000?
6,691 6,711
17. In this pie chart, what
fraction of children
liked apples?
18. What is the area of a grid 7 cm by 4 cm?
19. 8 × 9 =
cm 2
20. Roll a dice. There is a in
chance of it landing on a number lower than 3.
6 cm
APPLES
PEARS
1. What was the time
1
of an hour prior?
4
1:00 12:00
6 cm
6 cm
BANANAS
ORANGES
2. 24 ÷ 3 = (12 ÷ 3) + (12 ÷ ) = 4 + 4 = 8
3. €20.00 – €12.50 = €
4. 40 + 70 =
5. 8 m 70 cm = cm = . m
6. 2 – 0.1 =
7. Is this line horizontal?
Yes
No
8. 7,000 + 300 + 8 =
9. What type of triangle is this?
isosceles
scalene
equilateral
10. What is the perimeter? cm
11. 0.9 + 0.2 =
12. 89 minutes = hour(s) minute(s)
13. Draw a pentagon
inside the triangle.
14. 29 × 100 =
15. In this pie chart, what
fraction of children
liked bananas?
16. 6 + 7 =
17. 1,599c = €
18. Roll a dice. There is a in
chance of it landing on a number higher than 3.
19. How many angles has a rhombus?
20. 5 120 =
APPLES
PEARS
7 cm
4 cm
BANANAS
ORANGES
Review sample
7 cm
Week 8
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 23

WEDNESDAY
THURSDAY
Week 8
1. What will be the time 1 4 of an
hour after?
2. 0.6 + 0.4 =
3. 60 + 70 =
4. 4,000 + 700 + 30 + 1 =
5. 1 – 0.4 =
6. 18 ÷ 3 = (9 ÷ 3) + ( ÷ 3) =
7. 94 minutes = hour(s) minute(s)
8. What type of triangle?
9. What is the perimeter of the above triangle?
cm
10. Tick the correct box. A railway track has
parallel lines.
11. 1,405c = €
oblique lines.
12. How many tenths are in 2 units?
13. €20.00 – €16.40 = €
14. 2 kg 400 g = g
15. 25 = 4 × 6
True
False
16. In the pie chart, what
fraction of children
liked pears and oranges?
17. 6 × 9 =
18. 56 ÷ 8 = (16 ÷ 8) + ( ÷ 8) =
19. Draw a hexagon inside
the equilateral triangle.
20. 4 92 = 2 =
3 cm
APPLES
PEARS
6 cm
9 cm
4:45
1. What will be the time 1 4 of an
10:45
hour after?
BANANAS
ORANGES
2. What is the area of a grid 6 cm by 4 cm?
24 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class
cm 2
3. Tick the correct box. A flagpole stands in a
horizontal position.
4. 2,000 + 90 + 3 =
5. 0.5 + 0.8 =
vertical position.
6. 100 minutes = hour(s) minute(s)
7. 30 + 80 =
8. 1,959c = €
9. Roll a dice. There is a in
chance of it landing on an even number.
10. 30 ÷ 5 = (20 ÷ 5) + ( ÷ 5) =
11. 7 × 6 = (5 × 6) + ( × 6) =
12. 2 – 0.2 =
13. €20.00 – €8.60 = €
14. In Wednesday’s pie chart, what fraction of
children liked oranges, bananas and pears?
15. 1, 2, 4, 7, 11,
16. Draw an octagon
using the two squares
as an aid.
Review sample
17. How many fifths are in 3 units?
18. Share €20.00 equally among 8 people.
€ each
19. 6 84 =
20. 2.1 > 1.9
True
False

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. A juice company paid €1,000 to a farmer
for oranges (at 50c per kg). How many
kilograms did the farmer supply?
kg
2. Which town is 4 times
further than 7 km?
1. Bow Street (Red)
Tuesday
Colour the block graph.
2. Manor Street (Blue)
POSTAL
STREET
BOW
MANOR
NUMBER
OF
POST
STOPS
40
15
Wednesday
1. Mary arranged 42 eclairs into 6 rows of
.
2. Tony arranged 96 cupcakes into 8 rows
of .
Thursday
1. A film started at 5.15 p.m. It was 1 3 4 hours
long. There was a 15-minute break halfway
through the film. At what time did the film
finish?
p.m.
2. The difference between two numbers is 3
and their sum is 15.
40
35
30
25
20
15
10
The numbers are and .
5
0
Bow Street
28 km Dowra
20 km Drumee
Manor Street
1. What was the time 1 4
of an hour before?
2. 70 + 80 =
3. €20.00 – €11.30 =
€
4. 9,000 + 800 + 20 + 4
=
5. 90 minutes =
hour(s)
minute(s)
6. How many eighths are
in 3 units?
7. 7 × 6 =
8. 2 – 0.3 =
9. Draw a pentagon inside
this triangle.
10. 0.8 + 0.2 =
11. 1,259c = €
12. 3 km 300 m
= m
= . km
3:00
13. In the pie chart, what
fraction of children
liked cats?
DOGS
MICE
BIRDS
CATS
14. 1 – 0.7 =
15. Name one type
of triangle that is
symmetrical.
16. 0.8 + 0.2 =
17. Which number is nearer
to 9,800?
9,775 9,815
18. Roll a dice. There is a
in
chance of it landing on
a number lower than 4.
19. 21 – 7 =
20. How many angles has a
rhombus?
21. Name this triangle.
22. What is the perimeter
of the above triangle?
23. 4 220 =
cm
24. What is the area of a
grid 6 cm by 5 cm?
25. 24 ÷ 4
cm 2
= (12 ÷ 4) + ( ÷ 4)
=
5 cm
8 cm
13 cm
Review sample
Week 8
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 25

MONDAY
TUESDAY
Week 9
1. The zero has swapped places. Which is the largest
number?
1,056 1,506 1,560
2. 100 × 37 =
3. This is a
4. 2:51
5. 17 + 8 =
6. 0.7 + 0.9 =
minutes to
7. 3,000 + 500 + 2 =
8. 120 minutes = hour(s) minute(s)
9. What fraction of
children liked blue?
10. Roll a dice. There is a in
chance of it landing on a number higher than 2.
11. 1,425c = €
12. 0.7, 0.8, 0.9,
13. Draw an oval.
14. What is the perimeter of
a rectangle 6 cm by 9 cm?
15. €20.00 – €7.30 = €
16. 50 × 8 =
17. Complete the missing half.
Use a ruler to improve
accuracy.
18. How many tens go into nine hundred?
.
cm
19. 4 km 700 m = m = . km
20. 230 – 90 =
BLUE
BLUE
RED
1. 8 + 30 + 800 + 9,000 =
2. 25 – 9 =
3. 10:38
4. 1 > 0.9
True
5. 1 – 0.9 =
6. 30 + 80 =
minutes to
False
7. 145 minutes = hour(s)
minute(s)
8. Roll a dice. There is a in
chance of it landing on a number lower than 3.
9. 1 10 of 10 =
10. 400 – 90 =
11. How many diagonals has a square?
12. 2.6 m = cm
13. This is a
14. What fraction of
children liked red?
15. Use 6, 4, 3 and 5 to make the largest number
possible.
Review sample
16. How many lines of symmetry has a square?
17. What is the perimeter of an equilateral triangle
with 9-cm sides?
cm
18. 1,850c = €
19. 2,500 , 500 , 100 ,
20. 9,000 + 30 + 1 =
BLUE
BLUE
RED
.
26 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 8 + < 10
2. 17 ÷ 4 = r
3. 5,000 , 1,000 , 200 , 40 ,
4. 0.8 > 2
True
False
5. How many angles has an octagon?
6. 40 + 90 =
7. 1 – 0.1 =
8. 600 – 70 =
9. 5,000 + 600 + 40 =
10. 5:40
minutes to
11. How many twenties go into two hundred?
12. 80 × 100 =
13.
1
10 of 20 =
14. 6 + 7 + 6 =
15. 4.8 kg = g
16. How much did Dad pay for each tyre on the family
car if the total cost was €600? (Don’t count the
spare!)
€ each
17. 6 × 80 =
18. What is the area of a grid 7 cm by 9 cm?
cm 2
19. €20.00 – €6.20 = €
20. Use 2, 3, 9 and 7 to make the lowest number
possible.
1. 21 = 3 ×
2. 2 300 m = m = .
3. 100 × 47 =
4. Roll a dice. There is a in
chance of it landing on an odd number.
5. 2 – 0.4 =
6. 11:32
7. 70 + 90 =
minutes to
8. 155 minutes = hour(s)
minute(s)
9. 0.5 < 1
True
10. 1,709c = €
False
11. Write the numeral two thousand, four hundred
and seventy-nine.
12. 600 – 250 =
13. 6,000 + 3 =
14. How many angles has a rhombus?
15. How many threes go into three hundred?
16. 800 – 60 =
Review sample
17. €20.00 – €9.50 = €
18. 7 × 90 =
19. How many sixths are in 3 units?
20. Which number is nearer to 500?
484 512
Week 9
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 27

PROBLEM-SOLVING
FRIDAY REVIEW
Week 9
Monday
Make the numbers across and down total 13.
1. Use 2, 4, 6 and 7.
2. Use 2, 5, 6 and 8.
Tuesday
Colour the correct signs.
1. 6 × 4 kg 3 × 8 kg
2. 3 × 12 kg 4 × 8 kg
Wednesday
1. The difference between two numbers is
2. The sum of the numbers is 16. The two
numbers are
and .
2. A chef dipped 1 4 of 48 ice cream cones
in melted chocolate. How many have
chocolate?
1.
2.
Thursday
Draw the next three in the patterns.
1. 8 + < 12
2. 1 < 0.7
True
3. 2 – 0.1 =
4. 40 + 80 =
5. 21 ÷ 4 = r
False
6. How many angles has a
rhombus?
7. 0.3, 0.6, 0.9,
8. 2.9 kg = g
9. €20.00 – €7.90 =
€
10. 10:39
14.
1
10 of 30 =
minutes to
15. What is the perimeter of
an equilateral triangle
with 7-cm sides?
cm
16. 250 , 500 ,
, 1,000
17. What is the name
of this triangle?
18. How many fifths are in
4 units?
19.
What fraction of people
liked coffee?
20. 6,000 + 400 + 5 =
21.
TEA
This is a
COFFEE
COFFEE
22. 135 minutes =
11. 220 – 80 =
12. What is the cost of
hour(s)
minute(s)
buying 5 kg of apples at 23. 500 – 150 =
€11.50 per kg?
24. Which number is nearer
€
to 800?
13. 6 × 70 =
786 815
25. Roll a dice. There is a
Review sample
in
chance of it landing on a
number higher than 1.
.
28 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 1
10 of 80 =
2. What is the place value of the 9 in 9,376?
3. This shape is a
4.
Measure this line.
5. 3 4 of 20 =
6. 1, 4, 9, 16, , 36
7. 0.7 + 0.7 =
.
cm
8. How many sides has a rhombus?
9. 1,090c = €
10. Round 747 to the nearest hundred.
11. 3 × 8 =
12. 0.6 + 0.5 =
13. This is a net of a
14. 40 + 50 + 30 =
15. 9,000 + 400 + 2 =
16. 6.7 m = cm
17. What fraction liked carrots?
.
PEAS
CARROTS
SWEETCORN
1. 1 4 kg = g
2. 2 3 of 15 =
3. What fraction
liked sweetcorn?
4. 4 + 7 =
5. What is the place value of the 5 in 5,317?
6. How many sides has a pentagon?
7. 200 , 400 , 800 , 1,600 ,
8. What is this shape?
9. What is the perimeter?
10. 6 × 8 =
cm
11. Which letter has two lines of symmetry?
B T X A
12. 6 × 7 = (5 × 7) + ( × 7) =
13. 7,000 + 400 + 90 =
14. This is a net of a .
15. 1,450c = €
16. 9 + 9 + 9 + 9 = 4 × =
17. 0.6 + 0.4 =
6 cm
CARROTS
SWEETCORN
8 cm
12 cm
Review sample
PEAS
18. 180 minutes = hour(s) minute(s)
19. Draw the least number of coins to make €2.65.
Week 10
18. €10.00 – €7.70 = €
19. 10 – 0.1 =
20. Which number is nearer to 1,000?
987 1,010
20. Which is longer, 5 weeks or 1 month?
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 29

WEDNESDAY
THURSDAY
Week 10
1. Which fraction is equal to 0.3?
3
10
3
100
2. Write the numeral eight thousand, eight hundred
and eighty-eight.
3. 205 – 30 =
4. How many lines of symmetry does
an isosceles triangle have?
5. What is the cost of 2 kg of cheese at €2.50 per kg?
€
6. Which decimal has the highest value?
0.38 0.4 0.29 0.53
7. 100, 81, 64, , 36
8. What fraction
liked peas?
9. 4 × 8 =
10. This is a .
11. 16 + 9 + 5 =
12. 61 × 100 =
13. 3 5 of 40 =
14. €20.00 – €4.70 = €
15. 1 – 0.3 =
16. 42 ÷ 7 = (21 ÷ 7) + ( ÷ 7) =
17. 0.9 + 0.4 =
18. Draw all the diagonals of a rectangle.
19. 4 × 100 =
20. Share €120.00 equally among 5 people.
€ each
PEAS
CARROTS
SWEETCORN
1. Which fraction is equal to 0.8?
8
10
8
100
2. This shape is an .
3.
Measure this line.
cm
4. How many lines of symmetry
does a scalene triangle have?
5. €20.00 – €11.80 = €
6. What is the perimeter of a
regular pentagon with 9-cm sides?
7. 9 × 8 =
8. Which is longer, 3 seasons or 10 months?
9. 0.7 + 0.4 =
10. This is a net of a
11. Which decimal has the lowest value?
12. 1,905c = €
0.29 0.73 0.5 0.17
13. 350 , 700 , 1,400 , 2,800 ,
14. What fraction liked
peas and carrots?
15. 210 – 70 =
16. 3,000 + 600 + 3 =
17. What is the area of a
grid 12 cm by 7 cm? cm 2
18. Which number is nearer to 1,000?
875 1,109
19. 0.9 < 1 True False
20. Write the numeral three thousand,
three hundred and fifty-seven.
.
CARROTS
Review sample
PEAS
SWEETCORN
cm
30 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. A bus is due to arrive at 6.15 p.m. Your
digital watch displays 5.55 p.m. How many
minutes before the bus arrives?
2. How many grams
per packet?
Tuesday
1. What are the time intervals?
2. When should the next bus
after 7.54 a.m. depart?
Wednesday
1. Find the date and month of Conor’s
birthday. It is in winter. It is 3 months
before the first month of spring. It is exactly
halfway through the month.
Conor’s birthday is the
2. Five children were in a race. Mary came
first. Tim was slower than Sally. Jill finished
ahead of Adam, who came last. Who came
third?
Thursday
1. The difference between two numbers is
7. The sum of the numbers is 17. The two
numbers are
and .
.
Chocolate
biscuits
20 packets
total 500 g
DEPARTURES
7.09 a.m.
7.24 a.m.
7.39 a.m.
7.54 a.m.
of
1. 1 10 of 60 =
2. Which decimal has the
highest value?
0.39 0.28
0.32
3. Which number is nearer
to 1,000?
788 1,195
4. What fraction
liked cars?
5. Measure this line.
cm
6. 100, , 64, 49,
36, 25, 16, 9, 4, 1
7. 2 3 of 21 =
8. 1,105c = €
9. 8 × 9 =
10. 230 – 70 =
11. €20.00 – €11.10 =
€
12. 2 – 0.8 =
DOLLS CARS
BOOKS
13. Share €120.00 equally
among 6 people.
€ each
14. Draw a net of a cone.
15. What is the area of a
grid 7 cm by 6 cm?
cm 2
16. 2 months are longer
than 6 weeks.
True
False
17. 9,000 + 500 + 3 =
18. 0.8 + 0.9 =
19. Which fraction is equal
to 0.7?
7
100
7
10
20. A chef paid €30 in total
for sugar. Sugar costs
20c per kilogram. How
many kilograms of
sugar did the chef buy?
kg
21. 100 minutes =
22. 9 × 7
hour(s)
minute(s)
= (5 × 7) + ( × 7)
=
23. 0.8 > 1
Review sample
True
24. 100 × 78 =
False
25. A week before the 6th
of February is
.
Week 10
2. A chef baked 20 cakes. 2 5 had icing and
the rest had cream. How many had icing?
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 31

MONDAY
TUESDAY
Week 11
1. Round 5 × 93.
5 × 90 5 × 80
1. What is the area of the
coloured section
of the grid?
2. 2 5 4
squares
+ 1 3 5
2. 3 4 1
+ 5 3 7
3. The capacity of the jug is 2,500 m .
Colour to show 1,500 m .
3. 9 + 6 =
4. On 6.7, what month are you in?
5. €20.00 – €11.80 = €
6. 100 – 70 =
7. 9 × 4 = (4 × 4) + ( × 4) =
8. 7 + 7 + 7 + 7 =
9. Will this shape tessellate?
10. 2, 5, 10, 17, , 37
11. Double 11.
12. 7 + 8 =
13. 3 = 1 2 of
14. €1.25 = c
15. Write the numeral one thousand and eleven.
16. The place value of the 8 in 2.8 is
17.
Measure this line.
18. Halve 24.
.
cm
19. Write as a fraction. 250 g = kg
20. 4 840 =
2
4. 210 – 30 =
5. 6 × 9 = (1 × 9) + ( × 9) =
6. Liam wrote 6.9 on his work. What was the month?
7. 5 = 1 2 of
8. This shape is known as an
32 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class
9.
Measure this line.
.
cm
10. What is the value of the 5 in 7,352?
11. €2.95 = c
12. Double 15.
13. A wizard needs 300 m
2 L
of beetroot juice.
Colour to show 300 m .
14. 110, 220, 330, , 550
15. If you’re in charge of a fleet of taxis and you need
to order tyres for 6 vehicles, how many tyres do
you order?
Review sample
(Don’t count the spares!)
16. Halve 28.
17. Write as a fraction. 500 g = kg
18. Write the numeral
two thousand and twenty-two.
10
19. 4 52 = 4 40
+ 4 12 =
20. €20.00 – €13.20 = €
500 m

WEDNESDAY
THURSDAY
1. What is the time?
2. 1,000 – 5 =
20
3. 3 72 = 3 60
minutes past 11
+ 3 12 =
4. Alison wrote 9.10 on her work.
What was the month?
5. 100 × 65 =
6. 7
100 = 0.
7. 8 × 8 = (5 × 8) + ( × 8) =
8. Will this shape tessellate?
9. Double 16.
10.
11. Write the numeral four thousand and forty.
12.
6 3 1
+ 2 5 7
Measure this line.
cm
13. 140 – 60 =
14. €9.50 = c
15. Write as a fraction. 750 g = kg
16. 8 + 8 + 8 + 8 = × =
17. What is the capacity of this jug?
2 L
18. 0.7, 0.8, 0.9,
19. 6 = 1 2 of
20. Halve 42.
m
9
10
8
11
7
12
6
1
5
2
4
3
1. What is the time?
2.
minutes to 12
Measure this line.
cm
3. This is a .
4. 4 200 = 2 100 =
5.
7 0 3
+ 1 9 4
6. Jess wrote 8.5 on her work. What month was it?
7. Double 19.
8. 8 × 7 = (3 × 7) + ( × 7) =
9. Round 8 × 72.
8 × 80 8 × 70
10. Will this shape tessellate?
11. 9
100 = 0.
12. 230 – 40 =
13. 9 = 1 2 of
14. €7.49 = c
15. 3 = 1 8 of
Review sample
1
16. 6 + 9 =
17. Draw the horizontal line of symmetry.
18. Halve 50.
19. €20.00 – €8.90 = €
20. 0.3, 0.5, 0.7, 0.9,
9
10
8
11
7
12
6
1
5
2
4
3
Week 11
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 33

PROBLEM-SOLVING
FRIDAY REVIEW
Week 11
Monday
1. In a 400-g box of crisps, there are 20
packets. What is the weight of each packet?
g
2. A super-fast train travels at 400 km per hour.
If the distance from Denton to Clenby is
600 km, how long, in minutes, will the train
journey take?
1. hinges cost?
€
minutes
Tuesday
How much did the
2. power washer cost?
€
1. What was the cost
of the haircut?
€
2. This
isosceles
scalene
triangle has
Wednesday
Thursday
lines of symmetry.
1. The difference between two numbers is
10. The sum of the numbers is 50. The two
numbers are
and .
2. What is the distance
between the towns?
km
3 cm
TOTAL:€90.00
TOTAL:€80.00
5 cm
4 cm
47 km Glenford
65 km Seaport
1. What is the time?
2. 6 + 9 =
minutes past
3. Dylan wrote 1.3 on his
work. What month was
it?
4. 1,000 – 6 =
5. 40, 80, 120, ,
200
6. Will this shape
tessellate?
7. 210 – 70 =
8. 8 × 9
2 L
= (3 × 9) + ( × 9)
=
9. €20.00 – €17.50 =
€
9
10
8
11
7
12
10. Measure this line.
cm
11. 0.2, 0.4, 0.6, 0.8,
6
1
5
2
4
3
12.
2 6 3
+ 3 1 5
13. Double 17.
14. 7 × 6 = (2 × 6) +
( × 6)
=
15. 5 = 1 2 of
16. 3 75
20
= 3 60
=
+ 3
17. Write as a fraction.
250 g = kg
18. Halve 30.
19. 4
100 = 0.
20. This jug has a capacity
of 2 . Each mark
equals
100 m .
250 m .
500 m .
21. What is the value of
the 9 in 9,260?
Review sample
22. In a 500-g box of
biscuits, there are 25
packets. What is the
weight of each packet?
23. What is the place value
of the 9 in 8.9?
24. 7 × 8 =
g
2
25. 6 = 1 2 of
34 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. What is the time?
minutes past
2. Write as a fraction.
100 g = kg
3. Perimeter of a rectangular
building 30 m by 15 m?
m
4. €20.00 – €9.20 = €
5. €5.50 = c
6. 1 – 0.3 =
7.
2 , 3 0 4
+ 6 , 2 5 3
8. 5 345 =
9. 8 × 10 = (3 × 10) + ( × 10) =
10. 4
100 = 0.
11. 5 = 1 4 of
12. Double 0.4.
13. What is this 3-D shape?
14. In the pie chart, 5 children liked milk.
How many liked cola?
15. How many liked
orange juice?
ORANGE
JUICE
16. How many more liked orange juice than milk?
9
10
8
MILK
COLA
11
7
12
6
1
5
2
4
3
1. What is the time?
2. 0.9 + 0.2 =
minutes to
3. What fraction of a
kilogram is 250 g?
1
4 kg
1
2 kg
4. Write the numeral nine thousand and ninety.
5. 1 – 0.7 =
6. Double 0.3.
7. Which number is nearer to 8,800?
8.
9. 2 = 1 4 of
10. 9
100 = 0.
8,650 8,888
3 , 5 9 0
+ 1 , 2 0 8
11. What is the area? m 2
12. , 9.5, 9, 8.5, 8
13. Perimeter of a rectangular car park
100 m by 50 m? m
14. 7 × 5 = (5 × 5) + ( × 5) =
15. How many wheels are there on 17 bicycles?
Review sample
16. What fraction of a litre is 250 m ?
1
2
1
4
17. Write the lowest number possible using the
digits 8, 9, 7 and 3.
9
10
8
11
7
12
6
10 m
1
5
2
4
3
5 m
Week 12
17. What fraction of a litre is 500 m ?
1
2
18. 100 × 99 =
19. 4
10 = 0.
20. 0, 1 2 , 1, 1 1 2 ,
1
4
18. 130 – 70 =
19. Double 0.5.
20. Share €20.00 equally among 8 people.
€ each
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 35

WEDNESDAY
THURSDAY
Week 12
1. This is a .
2. Round 3,585 to the
nearest thousand.
3. €6.09 = c
4. 8
10 = 0.
5. 3 = 1 4 of
6. 8
100 = 0.
7. Is your nose symmetrical?
8. 1 1 2 hours = hour(s) minute(s)
or
9. 5 × 10 =
10.
minute(s).
Measure the length of this line.
cm
11. 0.8 + 0.6 =
12. Perimeter of an office building that is shaped as a
regular pentagon with 10-m sides?
13. 5 635 =
m
14. 9.7, 9.8, 9.9,
15.
4 , 0 6 3
+ 2 , 4 2 2
16. 8 × 9 = (5 × 9) + ( × 9) =
17. Write the largest number possible using the digits
3, 9, 7 and 0.
18. What is the area of a grid 2 cm by 10 cm?
cm 2
19. Which lines are perpendicular?
A
B
20. €20.00 – €14.10 = €
1. Which lines are intersecting?
A
2. 1 350 m = m = .
3. €7.75 = c
4. Draw the vertical line
of symmetry.
5. 1 – 0.1 =
6. Round 5,580 to the nearest thousand.
7. Halve 1.
8. Draw a line of symmetry
on the triangle.
9. The triangle is an
10. 6 = 1 4 of
equilateral triangle.
isosceles triangle.
11. 2,000 , 5,000 , 8,000 ,
12. 7
100 = 0.
13. 4 + 4 + 4 =
14. What is the perimeter of a
tennis court 15 m by 9 m?
15.
Review sample
2 L
Measure this line.
B
cm
16. Write the lowest number possible
using the digits 6, 8, 3 and 9.
17. Double 0.9.
18. €20.00 – €3.70 = €
19. Each mark equals
100 m .
250 m .
500 m .
20. Colour to show 700 m .
5 cm
1
m
5 cm
36 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. A scientist took 4 equal volumes of water
samples from a river. A total of 1 was
collected. What was the volume of each
sample?
m
2. An architect is designing an auditorium.
Row E has 10 seats and each row after has
10 more than the previous row. What is the
total seating capacity?
STAGE
Tuesday
1. A florist arranged 1 rose for every 3
carnations in a vase of 24 flowers. How
many carnations were there?
2. A librarian purchased 8 books each for
history, science and poetry. How many
books were bought altogether?
Wednesday
1. A scientist placed 20 test tubes into racks
of 8. How many racks in total?
2. How many empty slots were there on one
rack?
Thursday
1. 1, 3, 6, 10, 15, , 28
2. 100, 99, 97, 94, 90, 85, , 72
E
D C B A
2 L
9
10
8
1. What is the time?
2. 9 + 5 =
3. Halve 1.
4. 100 × 70 =
5. Double 0.7.
minutes to
6. Each mark equals
100 m .
250 m .
500 m .
7. The capacity of the jug
= m
= .
8. 1 – 0.3 =
9. €7.50 = c
10. 2,000 , 4,000 , 6,000 ,
11. 16 – 7 =
12. 5 635 =
13. A florist arranged
2 roses for every 3
carnations. In a vase of
20 flowers, how many
were roses?
14. Are these lines
intersecting?
15. Write the lowest
number possible using
the digits 6, 0, 3 and 7.
16. What fraction of a litre
is 250 m ?
1
2
1
4
17. Share €15.00 equally
among 10 people.
€ each
18. 150 – 90 =
19.
20.
Measure this line.
cm
1 , 3 0 7
+ 5 , 2 9 1
21. Draw a horizontal line
of symmetry.
22. 6 × 9 = (5 × 9) +
( × 9)
Review sample
11
7
12
6
1
5
2
4
3
2
1
=
23. What is the perimeter
of a rectangular
building 16 m by 9 m?
m
24. How much would you
pay for 20 of milk that
costs €1.50 per 2 ?
€
25. 8
100 = 0.
Week 12
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 37

MONDAY
TUESDAY
Week 13
1. 2
10 = 0.
2. 1 = m
3. What two shapes make a cylinder?
and
1. 2
100 = 0.
2. What shape?
3. 6 × 7 = (1 × 7) + ( × 7) =
4. 1 2 of 10 =
5. €4.05 = c
6. Double 500.
7. 1 1 4 hours = hour(s) minute(s)
8. How many triangles
can you find?
9. Write as a fraction. 200 g = kg
10. (7 × 2) – 9 =
11. Is 231 divisible by 3?
12. Write the largest even number possible using the
digits 2, 5, 3 and 0.
13. These lines are
parallel.
perpendicular.
14. Write the numeral three thousand, one hundred
and fifty.
15. 16 – 7 =
16. Write as an equivalent fraction.
17.
4 , 3 0 5
+ 2 , 2 8 3
18. 12 = 1 4 of
19. What is the perimeter of a
warehouse 100 m by 60 m?
20. 5, 50, 500,
1
5 = 10
m
4. 1 2 of 20.
5. 2 500 m = m = .
6. Does a square have parallel lines?
7. 20 ÷ 2 =
8. Double 400.
9. Write as a fraction. 500 g = kg
10. How many triangles
can you find?
11. What two shapes make a triangular prism?
12. (9 × 3) – 7 =
and
13. Write the lowest odd number possible using the
digits 3, 9, 6 and 4.
14. 9 = 1 4 of
15. What is the area of this grid?
16. Halve 90.
squares
Review sample
17. €9.55 = c
18. 9,000 , 900 , , 9
19. 200 – 60 =
20. Write as an equivalent fraction.
1
2 = 4
38 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 4 12 = 4 ÷ 12
12 ÷ 4
2. €12.59 = c
3. 19 – 9 =
4. 6 400 m = m = .
5. 24
100 = 0.
6. 1 3 4 hours = hour(s) minute(s)
or
7. 1 4 of 40 =
minute(s)
8. Which lines are parallel?
A
9. What two shapes make a square-based pyramid?
B
and
10. Which digit has the value of 4?
2.41 4.02 42.3
11. Write the numeral
six thousand and nineteen.
12. Does a triangle have parallel lines?
13.
1
2 > 1 5 True False
14. (6 × 4) – 5 =
15.
1
2 = 2 4 True False
16. What is the area of a grid 6 cm by 4 cm?
cm 2
17. Which number is nearer to 3,000?
18.
2,850 3,125
6 , 0 6 5
+ 3 , 9 2 1
1. A clock has the minute hand pointing to 2 and
the hour hand just past 2.
What is the time?
2. Write as an equivalent fraction.
2
3 = 6
3. 0.7 + 0.4 + 0.2 =
4. In the pie chart,
four children liked tennis.
How many liked swimming?
5. How many liked football?
6. How many more liked
swimming than tennis?
7. 36 ÷ 6 =
8. 1 2 of 30 =
9. €10.49 = c
10. Draw a reflection of:
11. 2 hours = hour(s) minute(s)
or
minute(s)
12. 8 × 10 = (3 × 10) + ( × 10) =
13. (5 × 6) – 7 =
14. Which digit has the value of 6 tenths?
6.9 0.56 2.6
15. Is a light bulb symmetrical?
16. 21 – 7 =
FOOTBALL
TENNIS
Review sample
SWIMMING
Week 13
2 L
19. The capacity is 1 500 m .
The markings are equal to
100 m .
20. 6 612 =
1
4 .
1
2 .
17.
1
3 < 1 2 True False
18. 90 + 80 =
19. 5 800 =
20. 17
100 = 0.
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 39

PROBLEM-SOLVING
FRIDAY REVIEW
Week 13
Monday
An architect is designing a small staircase.
The height of each step is 20 cm and each
length is 30 cm.
30 cm
20 cm
1. What is the length of a? cm
2. What is the height of the staircase (b)?
cm
Tuesday
1. The top view will look like .
A B C D
2. Tick the matching shape after a 1 2 turn
rotation.
A B C
Wednesday
Write in the missing digits.
1. 7 2 2.
+ 1 5
7 4 0
Thursday
Write in the missing digits.
1. 4 3 2.
– 2
30 cm
1 5
a
3 6
+ 4
6 0
b
1 3
– 5 0
9 3
1. 3
100 = 0.
2. 1 2 of 50 =
3. €7.50 = c
4. 2 800 m
= m
= .
5. 21 – 9 =
6. 1 3 4 hours =
or
hour(s)
7. (7 × 4) – 8 =
8. 1 2 > 1 10
True
minute(s)
minute(s)
False
9. Which digit has the
value of 5 tenths?
0.52
5.20
52.0
10. If 6 people liked
tennis, how many liked
swimming?
11. 2 200 m
12.
13.
= m
= .
1
4 of = 3
2 , 3 4 0
+ 6 , 5 1 8
14. Halve 70.
SWIMMING
TENNIS
15. Which lines are
perpendicular?
A
B
16. Write as an equivalent
fraction.
4
8 = 4
17. 21
100 = 0.
18. 5 900 =
19. What is the area of this
grid?
squares
20. What two shapes make
a cylinder?
and
21. Write the lowest number
possible using the digits
5, 4, 7 and 3.
22. How many triangles
can you find?
Review sample
FOOTBALL
23. 1,000 , , 10
24. Is a tennis racket
symmetrical?
25. 9 = 1 4 of
40 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. The capacity is 2 . The marks are equal to
100 m .
2. 0.8 + 0.5 =
3.
4. 2, 2.3, 2.6, 2.9,
1
4 .
1
2 .
5. Which digit has the value of 2 hundredths?
6. 5 700 =
7. 1 = 1
10 of
8. 5 × 8 =
0.23 203 0.72
9. This is a net for a .
10. Sum of 6 and 7 =
11. Tick the answer.
< right angle
> right angle
= right angle
12. 1 2 > 1 6 True False
13. Write as a decimal. 500 g = 0. kg
1
14. The equivalent fraction of
2 = 10 .
15. Ella wrote 2.5 on her work. What month was it?
16. 2 1 4 hours = hour(s) minute(s)
or
2 L
3 , 0 6 5
+ 2 , 4 1 4
minute(s)
12
11
10
17. 10:25 = 9
8
18. 170 – 80 =
19. 4, 8, 12, , 20
7
6
1
2
3
4
5
20. What is the area of a grid 9 cm by 11 cm?
cm 2
1. The minute hand is on the 5 and the hour hand is
halfway between 3 and 4. What is the time?
2. This shape is a .
3. 6 × 0 × 3 =
4. Write the highest number possible
using the digits 6, 0, 2 and 7.
5. 2 3 > 1 2 True False
6. 7 × 5 = (1 × 5) + ( × 5) =
7. Multiply 4 and 8.
8. Draw a net of a cube.
9. 10 = 1 10 of
10. What type of triangle?
isosceles
equilateral
11. What is the perimeter of the above triangle?
cm
12. 140 – 90 =
13. Tick the answer.
< right angle
> right angle
= right angle
14. €14.50 = c
15. What is the date a week earlier than the 9th of
December?
16. What is the cost of 1 kg of
cheese at €2.50 per 1 4 kg? €
17. 4 492 =
18. Round 5,801 to the
nearest thousand.
19. €20.00 – €3.80 = €
20. Draw the three
lines of symmetry.
7 cm
Review sample
7 cm
7 cm
7 cm
7 cm
7 cm
Week 14
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 41

WEDNESDAY
THURSDAY
Week 14
1. 100 × 86 =
2. How many faces has a triangular pyramid?
3. 1 4 , 2 4 , 3 4 , 1, 1 1 4 , 1 2 4 , 1 3 4 ,
4. 3 4 < 1 2 True False
5. What is the difference between 12 and 9?
6. 8 × 6 = (2 × 6) + ( × 6) =
7. Does a rectangle
have parallel lines?
8. Draw an oval.
9. What is the date a fortnight after the 7th of June?
10. This shape is a .
11. Write as a decimal. 100 g = 0. kg
12. €19.95 = c
13. 2 – 0.5 =
14. A chef has arranged 28 cupcakes into 4 rows.
Complete the number sentence.
28 = 4 ×
15. 350 + 450 =
16. Tick the answer.
< right angle
> right angle
= right angle
17. 80 – 15 =
18. 9 hundredths = 0.
19. 7 + 9 =
20. Round 7,499 to the nearest thousand.
1. A cuboid has vertices.
2. 3 = 1 5 of
3. Write as a decimal. 250 g = 0. kg
4. 2 1 2 hours = hour(s) minute(s)
or
minute(s)
5. How many edges has a triangular pyramid?
6. 4 + 7 + 6 =
7.
4 , 3 2 1
+ 3 , 0 6 5
8. 900 – 350 =
9. 4 72 = 2 = 18
10. €17.05 = c
11. 1.1 > 0.9 True False
12. Sum of 80 and 2 =
13. Write as an equivalent fraction.
4
6 = 12
14. What date is it four days before the 3rd of April?
12
11
10
15. 3:55 = 9
8
Review sample
16. 50 + 5 + 25 =
17. 9 tenths = 0.
7
6
1
2
3
4
5
18. Round 6,877 to the nearest hundred.
19. 1.1 – 0.2 =
20. What is the place value of the 2 in 8.32?
tenths
hundredths
42 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
1. 6 7 2.
+ 1
8 0
1. 9 0 2.
– 4
4 4
4th Class
Pupil Numbers
Boys: 14
Girls: 12
Monday
Write in the missing digits.
Tuesday
Write in the missing digits.
Wednesday
Write as number sentences.
2 2 8
+ 1
3 0 9
1 0
– 5 2
4 9
1. A chef baked 4 trays of scones. Each tray
had 7 scones. How many scones in total?
2. A grocer packed 6 bananas per bag. After
12 bags, how many bananas were packed?
Thursday
1. Colour the bar chart to match the data.
16
14
12
10
8
6
4
2
0
=
=
1. 100 × 71 =
2. Round 6,490 to the
nearest thousand.
3. 1, 4, 9, 16, , 36, 49
4. Name this shape.
5.
6. €20.00 – €16.20 =
€
7. How many vertices has
a triangular pyramid?
8. The difference between
33 and 3
=
9. 7 tenths = 0.
10. The product of 9 and 6
=
3 , 0 7 2
+ 6 , 7 1 6
11. 4 64 = 2 = 16
12. 2 = 1 10 of
13. 70 – 25 =
14. Tick the answer.
< right angle
> right angle
= right angle
15. What is the date a
fortnight after the 15th
of April?
16. 1 2 > 1 5
True
False
17. The sum of 60 and 70
=
18. 6 + 7 + 8 =
19. Name this shape.
20. (9 + 7) ÷ 2 = 8
True
False
21. Draw a net of a cube.
22. Write as a decimal.
500 g = 0. kg
23. How much would you
pay for 2 kg of cheese
at €3 per 1 4 kg?
Review sample
Boys
Girls
2. The difference between 2 numbers is 10.
The sum of the numbers is 90.
The numbers are and .
€
24. 3 – 0.4 =
25.
10:14
=
11
10
9
8
7
12
6
1
2
3
4
5
Week 14
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 43

MONDAY
TUESDAY
Week 15
1. 100 × 23 =
2. 14 – 8 =
3. Draw a reflection of:
1. 72 ÷ 6 = (60 ÷ 6) + ( ÷ 6) =
2. €15.05 = c
3. 8 + 9 + 5 =
4. 300 – 50 =
4. Write as a decimal. 200 g = 0. kg
5. 1 4 of 20 =
5. 210 – 70 =
6. 1 4 of 40 =
7. Tick the answer.
< right angle
> right angle
= right angle
8. Sum of 9 and 7 =
9. Does a pentagon have parallel lines?
10. Write 11
100 as a decimal.
11. 10 100 =
12. 5 = 1 5 of
13. Which number is nearer to 4,000?
3,725 4,125
14. Write the numeral six thousand, seven hundred
and twelve.
15. 6 × 7 = (5 × 7) + ( × 7) =
16. 1 – 0.7 =
17. 0.8 + 0.7 =
18. Six children liked jam sandwiches.
How many liked cheese?
19. How many liked
ham and tuna?
20. How many children were asked
about their favourite sandwich?
6. 2 1 2 hours = hour(s) minute(s)
or
minute(s)
7. Write as a decimal. 400 g = 0. kg
8. 2 kg 125 g = g
9. What date is it a week after Christmas Day?
10. Can a triangle tessellate?
11. Tick the answer.
12. 3 = 1 5 of
< right angle
> right angle
= right angle
13. 8:03 =
11
10
9
8
7
12
6
1
2
3
4
5
14. Does a rhombus have parallel lines?
15. These lines are
perpendicular.
parallel.
diagonal.
Review sample
JAM
HAM
CHEESE
TUNA
16. €11.50 + €3.50 = €
17. 8 × 5 = (5 × 5) + ( × 5) =
18. 1 – 0.3 =
19. €20.00 – €12.40 = €
20. 5 100 =
44 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
2 L
1. 4 tenths = 0.
2. 16 ÷ 4 =
3. 100 – 40 =
4. 1 4 of 12 =
5. €19.95 = c
6. What date is it a week after St Patrick’s Day?
7. €20.00 – €10.50 = €
8. Each mark is equal to
100 m .
250 m .
500 m .
9. Colour 500 m on the jug.
10. How many vertices has a cube?
11. €14.50 + €2.50 = €
12. Tick the answer.
13. 4 = 1 5 of
< right angle
> right angle
= right angle
14. 3 × 7 = (2 × 7) + ( × 7) =
15. The equivalent fraction of
16. What type of triangle?
17. 140 – 80 =
18. How many tractor wheels
are on a farm with 4 tractors?
19. 0.3, 0.6, 0.9,
4 mm
12 mm
7 mm
2
4 = 2 .
20. 4 36 = 36 ÷ 4 = 18 ÷ = 9
1,500 m
1. 18 + 12 =
2. €20.10 = c
3. How many faces has a cube?
4. 40 ÷ 10 =
5. 9 – 5 =
6. 1 4 of 16 =
7. 3 1 4 hours = hour(s) minute(s)
or
minute(s)
8. Does a regular hexagon have parallel lines?
9. (4 + 7) × 5 =
10. Can this shape tessellate?
11. 100 – 10 =
12. Write as a decimal. 750 g = 0. kg
13. 4 × 9 =
14. What type of triangle?
15. Write the numeral nine thousand, eight hundred
and forty-nine.
16. 8 hundredths = 0.
17. 2 × 3 × 0 =
18. 5 25 =
12
11
10
19. 5:42 = 9
8
7
6
1
2
3
4
5
20. What is the cost of buying 5 kg of potatoes at
70c per kg?
€
8 cm
Review sample
6 cm
6 cm
Week 15
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 45

PROBLEM-SOLVING
FRIDAY REVIEW
Week 15
Monday
1. Liam saved twelve 50c, twelve 10c and
twelve 5c coins.
What was the total amount? €
2. Liam spent €4.80 from his savings. How
much did he have left?
€
1. How many more
books did the girls
borrow?
Tuesday
2. The total number of
books borrowed was
.
Wednesday
1. Match the triangles to their names.
A B C
scalene equilateral isosceles
2. Complete the pattern.
1, 1, 2, 3, 5, 8, 13, 21,
SAVINGS
Thursday
Ethan walks home some days to
save his bus money.
€2.50
€2.00
€1.50
€1.00
€0.50
€0.00
1. Which day did Ethan
catch the bus?
4th Class Library Borrowings
24
22
20
18
16
14
12
10
8
6
4
2
0
Boys Girls
2. His savings after a
week of school were
€ .
1. 37 + 13 =
2. 50 ÷ 10 =
3. 11 – 6 =
4. 1 4 of 20 =
5. 100 – 70 =
6. 100 × 71 =
7. 3 × 9 =
8. €11.50 + €9.50 =
€
9. Write as a decimal.
600 g = 0. kg
10. Can this shape
tessellate?
11. 2 – 0.2 =
12. What type of triangle?
5 mm
12 mm
10 mm
13. (5 + 7) × 3 =
14. Tick the answer.
< right angle
> right angle
= right angle
15. Sum of 7 and 6 =
16. Does a pentagon have
parallel lines?
17. 2 = 1 5 of
18. 8 × 8 = (5 × 8) +
( × 8)
=
19.
3:51
=
11
10
9
8
7
12
6
1
2
3
4
5
20. How many triangles
can you find?
21. 3 kg 175 g =
g
22. Each mark equals
100 m .
250 m .
500 m .
3,500 m
23. Colour the jug to show
2,500 m .
24. In the pie chart,
5 children liked chicken.
How many liked
burgers?
Review sample
Mon Tue Wed Thur Fri
DAYS OF SCHOOL WEEK
CHICKEN SAUSAGES
BURGERS
PIZZA
25. How many liked
sausages and pizza?
46 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 18 days = weeks and days
2. 23 – 8 =
3. How many edges has a cube?
4. 1 2 > 1
10 True False
5. 1 km = m
6. 5 805 =
7. 4 × 7 =
8.
4 , 0 2 5
+ 3 , 1 6 4
9. Colour the hexagon.
10. 2,000 , , 20 , 2
11. 27 ÷ 9 =
12. 2 + 0.8 =
13. 28
100 = 0.
14. Is your teacher’s desk symmetrical?
15. 90 + 30 + 20 =
16. What is the number after 9,998?
17. Does an octagon have parallel lines?
18. (200 + 200) ÷ 1 =
19. Tick the answer.
< right angle
> right angle
= right angle
20. Write as a decimal. 600 g = 0. kg
1. 34 days = weeks and days
2. Tick the answer.
< right angle
> right angle
= right angle
3. 320 – 90 =
4. Double 26.
5. 1 4 m = cm = 0. m
6. 40 × 5 =
7. 10 – 0.1 =
8. This is a .
9. Draw a pentagon
within the triangle.
10. Write the highest number possible using the digits
8, 5, 9 and 0.
11. Can semicircles tessellate?
12. Is 700 divisible by 5?
13. 5 × 6 = (2 × 6) + ( × 6) =
14. Round 24 × 9.
Review sample
24 × 10 20 × 9
15. What is the area of a
grid 7 cm by 10 cm? cm 2
16. How many tens go into 200?
17. 4 × 8 =
18. (16 ÷ 4) × 3 =
19. 9 + 9 + 7 =
20. After swimming 10 laps of a 50-m pool, the
distance covered is
m.
Week 16
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 47

WEDNESDAY
THURSDAY
Week 16
1. Which line is oblique?
A B C
2. 400 – 30 =
3. 4 × 50 =
4. (Double 20) ÷ 5 =
5. Complete the pattern.
6. 100 – 8 =
7. 2,700 m = km
8. 6 × 9 =
9. A triangle has no parallel sides.
True
False
10. How many laps of a 50-metre pool did you swim
if you reached 1,000 m?
11. Write the numeral two thousand nine hundred.
12. Write the six ways that 1, 2 and 5 can be arranged.
13. 1 4 of 100 =
14. 9 × 8 = (4 × 8) + ( × 8) =
15. 90 – 11 =
16. How many metres of fencing would you need for
a field 40 m by 12 m?
m
17. (before) , 900, (after)
18. How many tens go into 120?
19. 14 × 10 = 140, 14 × 9 =
20. Halve 12.
line of symmetry
1. 1,000 – 8 =
2. What is the perimeter of a farm fence 300 m on
2 sides, 450 m on one side and 650 m on the
other?
48 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class
m
3. €15.50 + €4.50 = €
4. 5 = 2 10 of
5. (Halve 100) ÷ 5 =
6. Will a circle tessellate?
7. How many tens go into 280?
8. Does a parallelogram
have parallel lines?
9. 0.2, 0.5, 0.8, , 1.4
10.
5 , 1 4 0
+ 2 , 3 4 5
11. Write the six ways that 4, 7 and 8 can be arranged.
12. 1 4 of 80 =
13. €20.00 – €10.80 = €
14. Tick the answer.
< right angle
> right angle
= right angle
Review sample
15. Write as a decimal. 250 g = 0. kg
16. To measure the length of a book, you would use a
trundle wheel.
17. Is 412 divisible by 3?
18. 13 – 9 =
ruler.
19. 7 × 4 = (5 × 4) + ( × 4) =
20. 5:12 =
11
10
9
8
7
12
6
1
2
3
4
5

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
Make the numbers across and down total 14.
1. Use 3, 5, 6 and 8.
1. What is the time?
2. 27 – 9 =
3. 5 × 9 =
14. Tick the answer.
< right angle
> right angle
= right angle
Week 16
2. Use 9, 7, 5 and 2.
Tuesday
1. What are the time intervals?
2. When is the next bus after
8.52 a.m. due to depart?
Wednesday
A super-fast train travels at 600 km per hour.
Complete the table.
Time
1. 30 min
2. 1 1 2 hours
Thursday
Distance (km)
1 hour 600
1. An architect is designing an auditorium.
Row A has 15 seats and each row after
that has 15 more seats. What is the seating
capacity?
STAGE
DEPARTURES
8.04 a.m.
8.20 a.m.
8.36 a.m.
8.52 a.m.
A B C A
4.
4 , 0 1 2
+ 3 , 9 0 3
5. 6 = 3 5 of
6. If a grid is 9 m by 4 m,
what is the area?
m 2
7. What is the place value
of the 3 in 2.73?
8. 4 × 11 =
9. Does a rhombus have
parallel lines?
10. (500 + 500) ÷ 2 =
11. Halve 24.
12. €20.00 – €7.50 =
€
13. 4 × 8 =
15. Round 29 × 6.
20 × 6 30 × 6
16. Is 700 divisible by 2?
17. 1 4 of 200 =
18. 2 – 0.3 =
19. Can an oval tessellate?
20. Write as a decimal.
250 g = 0. kg
21. What is the perimeter
of a field that is 2 km
by 1.7 km?
22. 7.7 km =
Review sample
23. 1 2 of 90 =
km
m
24. If you swam 1,500 m in
a 50-m pool, how many
laps did you swim?
2. 100, 95, 85, 70, 50,
25. 9 + 7 + 5 =
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 49

MONDAY
TUESDAY
Week 17
1. 30 days = weeks and days
2. €25.05 = c
3. Draw a reflection of:
4. (4 + 5) × 11 =
5. 90 + 20 =
6. 39 × 10 =
7. 3 1 2 hours = hour(s) minute(s)
or
8. 6 + 7 + 4 =
minute(s)
9. These three shapes are all .
10. Write as a decimal. 300 g = 0. kg
11.
12.
7 4 2
– 5 2 0
1
4 of 24 =
13. A square has
parallel lines.
non-parallel lines.
14. Draw a horizontal line of symmetry.
15. Write the numeral nine thousand,
eight hundred and nineteen.
16. How many tens in five hundred?
17. What will be the area of a grid 6 cm by 5 cm?
cm 2
18. If you swim 15 laps of a 50-m pool, how many
metres have you swum?
m
19. Double 55.
20. Write as an equivalent fraction.
4
5 = 10
1. 5 weeks and 4 days = days
2. €19.40 = c
3. (12 – 7) × 11 =
4. 1,000 – 7 =
5. What is the place value of the 4 in 2.64?
6. 100 – 20 =
7. 3 1 4 hours = hour(s) minute(s)
or
minute(s)
8. Tick the shape that has no right angles.
9.
A B C
10. 5 255 =
11.
1
4 kg = 0. kg = g
12. 0.8 – 0.4 =
13. 2 + 9 + 5 =
14. 19
100 kg = 0.
15. This angle is
acute.
right.
obtuse.
16. Write the numeral five thousand five hundred.
17.
2 9 5
– 1 7 1
Review sample
1
4 of 32 =
18. 0.3 < 0.9 True False
19. Halve 120.
20. Double 65.
50 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 1,000 – 9 =
2. 8 9 5
– 4 2 4
1. 58 + 7 =
2. 150 – 90 =
3. Will this shape tessellate?
Week 17
3. The product of 4 and 7 =
4. 200 – 60 =
5. Write the six ways that 4, 7 and 9 can be arranged.
6. What is the value of the 3 in 8.43?
7. 99 × 100 =
8. Which is a net of a cube?
A
9. Write as a decimal. 900 g = 0. kg
10. 14 + 16 =
11. 0.5 > 0.2 True False
12.
7:18 =
11
10
9
8
7
B
12
6
1
2
3
4
5
13. Round 4,675 to the nearest hundred.
14. Write the equivalent fraction for 2 3 .
6
15. Share €100.00 equally among 20 children.
16.
€ each
1
4 of 800 =
17. It rained for seven days.
How many days were sunny?
4. 4 + 6 + 5 =
5. This angle is
acute.
right.
obtuse.
6. Mia wrote 7.8 on her work. What month was it?
12
11
10
7. 10:52 = 9
8
7
6
1
2
3
4
5
8. 1 4 = 0. = m
9. 7 + 7 + 7 + 7 + 7 =
10. Which lines are perpendicular?
A
B
11. Write the numeral four thousand, two hundred
and two.
12. Rearrange 3,407 to be of the highest value.
Review sample
SUN
RAIN
13. 75 × 100 =
14. Draw a reflection of:
15. 1.0 – 0.3 =
16. €20.00 – €15.50 = €
17. (3 ÷ 1) × 11 =
18. How many days had snow?
19. How many days had sun and rain?
20. How many days altogether?
SNOW
18.
1
4 of 200 =
19. €30.00 = c
20. 3 3 4 hours = hour(s) minute(s)
or
minute(s)
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 51

PROBLEM-SOLVING
FRIDAY REVIEW
Week 17
Monday
1. Which office has a perimeter of 100 m?
2. What is the perimeter of offices A and B?
A
m
Tuesday
1. A 5-m ribbon was cut into 1 2 -m pieces.
How many pieces were there?
2. A 10-m ribbon was cut into 1 4 -m pieces.
How many pieces were there?
Wednesday
1. You saved six €20 notes. You had €29 left
after purchasing new headphones. What did
the headphones cost?
€
40 m 30 m
2. This house design is symmetrical. Complete
the drawing. (Use a ruler for accuracy.)
Thursday
1. What is the weight of
1
2 of the cupcakes?
kg
2. What is the weight of
1
4 of the cupcakes?
g
Office Avenue
B
Ginger
Cupcakes
20 cakes
total 2 kg
20 m
1. 6 weeks and 5 days =
days
2. The product of 5 and 3
=
3. (4 + 5) × 11 =
4. €15.50 =
5. 5 305 =
6. 3 1 2 hours =
or
c
hour(s)
minute(s)
minute(s)
7. Write as a decimal.
8.
600 g = 0. kg
9. 1 4 of 400 =
10. Name this shape.
11. 1.0 – 0.2 =
12. What is the area of a
grid 4 cm by 9 cm?
cm 2
13. Write the numeral seven
thousand, two hundred
and twelve.
14.
8 9 4
– 2 5 1
1
4 kg = 0. kg
= g
15. 24 + 26 =
16. After 20 laps of a 50-m
pool, how many metres
have you swum?
m
17. Draw a net of a cube.
18. 120 – 80 =
19. This angle is
acute.
right.
obtuse.
20. 98 + 7 =
21. Draw a reflection of:
22. 4 × 12 =
23.
5:51
Review sample
11
10
9
8
7
=
12
6
1
2
3
4
5
24. What is the place value
of the 3 in 3,600?
25. 23
100 = 0.
52 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 1,000 – 20 =
2. If the date is the 24th of April, what will the date
be a week later?
3. This is a .
4. (12 ÷ 2) × 11 =
5. Write the numeral three thousand, three hundred
and sixteen.
6. 25, 50, 75, 100, , 150
7. 21 – 9 =
8. 5 125 =
9. This is a
10. 49 × 10 =
11. 1 4 of 100 =
12. This angle is
acute.
right.
obtuse.
13.
3 , 0 5 9
– 2 , 0 3 8
14. 1 – 0.6 =
15. Write as a fraction.
50 cm = m
16. 1 2 > 1
10 True False
17. Circle the horizontal line.
18. Which is heavier, 1 kg or 300 g?
19. Halve 34.
20. 220 – 70 =
.
1. 1,000 – 120 =
2. 1 4 kg = 0. kg = g
3. How many faces has a triangular prism?
4. 15 – 7 =
5. (28 ÷ 4) × 5 =
6. This angle is
acute.
right.
obtuse.
7. 3 × 8 =
8. 5 165 =
9. Kate has 6 sweets. John has 4 sweets. How many
altogether? Complete the number sentence.
6 4 =
10. Arrange 4, 7 and 8 in six ways.
11. A rhombus has
parallel lines.
non-parallel lines.
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 53
12.
12
11
10:38
13. = 10
9
8
14. 0.8 + 2.2 =
7
6
1
2
3
4
5
15. How many laps of a 50-m pool
if you swam 1,000 m?
16. Which is heavier, 2 kg or 250 g?
17. 1 4 of 1,000 =
18.
6 , 5 4 8
– 1 , 4 0 7
Review sample
1
3 = 2
6 = 9
19. Double 29.
20. 7 + 8 + 9 =
Week 18

WEDNESDAY
THURSDAY
Week 18
1. 89
100 = 0.
2. 200, 175, 150, , 100
3. (70 ÷ 10) × (6 ÷ 2) =
4. 1,000 – 4 =
5. Are your shoes symmetrical?
6. Complete the pattern.
7.
2
3 = 6 = 8
8. Which lines are perpendicular?
A
B
9. Ben has 5 cakes. Sam has 8 cakes. How many
altogether? Complete the number sentence.
10. 120 ÷ 6 = (12 tens ÷ 6) = tens
11. Round 3,549 to the nearest thousand.
12. 150, 175, , 225, 250
13. Do semicircles tessellate?
14. 3 1 2 hours = hour(s) minute(s)
or
minute(s)
15. Write as a fraction. 25 cm = m
16. 0.7 + 2.3 =
=
line of symmetry
1. 8 hundredths = 0.
2. 4 + 8 + 9 =
3. If the date is the 7th of August, what was the
date a week earlier?
4. 5 205 =
5. 5.5 km = m
6. 1,000 – 12 =
7. Are your socks symmetrical?
8. (45 ÷ 9) × (5 + 2) =
9. This angle is
acute.
right.
obtuse.
10. Which shape has a diagonal line of symmetry?
A
11. How many vertices has a cuboid?
12
11
10
12. 2:08 = 9
8
13. 69 × 100 =
7
6
B
1
2
3
4
5
14. Which is the longest, 1 m, 80 cm or 0.1 km?
15. 150, 300, 450, , 750
Review sample
16.
8 , 9 7 2
– 5 , 3 1 0
17. 1 4 of 36 =
18. After swimming 12 laps of a 50-m pool, what
distance have you swum?
m
19. 420 – 60 =
20.
4
5 = 10
17. 1 4 of 24 =
18. 4 hours = hour(s) minute(s)
or minute(s)
19. 0.9 + 1.1 =
6
20.
20 = 40
54 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

A
PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. The smallest flagpole is 1 4 the height of
the tallest flagpole. The height of B is
m.
2. The height of C is
half the sum of
flagpoles A and B.
C =
m
Tuesday
1. Complete the pattern.
1 2 4 2 4 8 4 8 16 8
2. How many triangles can you find?
Wednesday
1. Which block matches A?
A
B Z
80 m
2. A bus left school at 9 a.m.
After an hour and a
half it stopped.
The time was
a.m.
Thursday
Write in the missing digits.
1. 8 4
2.
– 3
4 7
A B C
B
Z
A
A B C
B
Z
p.m.
3 6
+ 3 8
3 6 4
1. 0.7 = 7 tenths
7 hundredths
2. 9 + 5 + 4 =
3. 4 × 6 =
4. Which is not a line
of symmetry?
5. What is the date a week
after the 24th of April?
6. (80 ÷ 10) × (5 ÷ 1) =
7. 230 – 60 =
8.
8
12 = 4 2 =
3
9. 12 – 9 =
10. 1 4 of 1,000 =
11. 4.7 km =
12. Halve 38.
13. 300, 275, 250,
14. This angle is
15.
acute.
right.
obtuse.
4
5 = 8
A
m
B
C
16.
3 , 1 9 6
– 2 , 0 3 4
17. 5 305 =
18. Write as a fraction.
25 cm = m
19. 150 ÷ 3
= (15 tens ÷ 3)
= tens
20. Which line is
perpendicular to D?
A
B
21. If you swam 30 laps of
your local 50-m pool,
how far did you swim?
m
22. A grocer packed 6
apples in each bag.
How many apples in 3
bags?
Review sample
23. 1,000 – 22 =
24. A pentagon has
C
parallel lines.
non-parallel lines.
25. Round 6,590 to the
nearest thousand.
D
Week 18
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 55

MONDAY
TUESDAY
Week 19
L
1. 58 – 9 =
2. 15 – 8 =
3. Draw a reflection
(mirror image) of:
4. 6 + 5 =
5. 4 64 =
6. 3,700 m = km m
7. Double 250.
8.
5 , 4 9 7
– 4 , 1 0 3
9. Colour to show 600 m .
10. €20.00 – €19.20 = c
11. Circle the number nearer to 5,000.
4,959 or 7,345
12. 47
100 = 0.
13. What is the place value of the 5 in 7,500?
14. How many sixths in a whole?
15. This angle is
acute.
right.
obtuse.
16. 1 – 0.1 =
17. Jack has 7 apples. Jill has 8 apples. How many
altogether? Complete the number sentence.
18. Write as a fraction. 10 cm = m
19. 0.7 + 0.7 =
20. 15 = 4 × 5 True False
=
1
1. 96 – 9 =
2. 13 – 6 =
3. 4 + 9 =
4. The vertical line is cm.
5. 4 72 =
6. 1,900 m = km m
7. Double 750.
8. Write as a fraction. 75 cm = m
9. Draw a reflection of:
12
11
10. 11:23 = 10
9
8
7
6
1
2
3
4
5
11. How many tenths in 4 wholes?
12. Circle the perpendicular line.
13. 29 × 100 =
14. Circle the number nearer to 2,000.
5,654 or 2,051
15. Write 3,963 in expanded form.
3,000 + + + 3
Review sample
16. Halve 210.
17. 0.6 + 0.9 =
18. In the pie chart, the
eye colour of 18 children
was recorded. How many
had brown eyes?
19. How many had blue eyes?
20. How many more had blue eyes?
BROWN
BLUE
BLUE
56 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 4 weeks and 6 days = days
2. 14 + 10 =
3. 13 – 9 =
4. Double 15.
5. Draw a reflection of:
6. 4 92 =
7. 4 kg 600 g = g
8. Write the numeral eight thousand, nine hundred
and fifteen.
9.
5 , 9 8 4
– 2 , 7 3 1
10. This angle is
acute.
right.
obtuse.
11. How many eighths in 3 wholes?
12. What is the date a fortnight from the 17th of
April?
13. 120 – 80 =
14. Circle the number nearer to 9,000.
9,010 or 8,463
15. 6 × 7 =
16. Jade has 10 stickers. Kelly has 5 stickers. How
many altogether? Complete the number sentence.
17. 4 – 0.9 =
18. Is 731 divisible by 3?
19. 2.1 + 0.9 =
20. Halve 650.
=
1. 17 days = weeks and days
2. Is a computer keyboard symmetrical?
3. What is the area of a grid 6 cm by 8 cm?
4. Double 35.
5. 5 270 =
cm 2
6. 8 m 70 cm = cm = . m
7. Write the numeral seven thousand, six hundred
and eighteen.
8. 1,000 – 15 =
9. A hexagon has
parallel lines.
10. Draw a reflection of:
11. This angle is
acute.
right.
obtuse.
12. Write 6,285 in expanded form.
non-parallel lines.
+ + 80 +
13. 1 10 > 1 2 True False
14. Circle the oblique line.
Review sample
15. 150 – 40 =
16. Are batteries symmetrical?
17. Circle the number nearer to 1,000.
995 or 1,970
18. 5 – 0.8 =
19. Halve 48.
20. 2.3 + 0.7 =
Week 19
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 57

PROBLEM-SOLVING
FRIDAY REVIEW
Week 19
Monday
Liam attempted to save his weekly pocket
money.
SAVINGS
1. How much did Liam save after 5 weeks?
€
€3.75
€3.00
€2.25
€1.50
€0.75
€0.00
2. Which week did Liam not save?
Tuesday
1. The difference between two numbers is 10.
Their sum is 150. The numbers are
and .
2. The product of two numbers is 12. Their
difference is 1. The numbers are
and .
Wednesday
Write in the missing digits.
1. 9 2 2.
– 4
4 4
Thursday
1. What is the distance
between the two towns?
km
2. A cyclist rode from the sign to Glenford and
continued to Seaport. The cyclist returned to
the sign. What distance was covered?
km
Liam’s Weekly Savings
Week 1 Week 2 Week 3 Week 4 Week 5
WEEKS
2 1
– 3 7
1 7 4
100 km Seaport
65 km Glenford
1. 94 – 9 =
2. 1 5 < 1 2
True
3. 5 215 =
4.
False
5. Write as a fraction.
20 cm = m
6. Draw a reflection of:
7. 3 × 9 =
8. 62
5 , 8 4 9
– 2 , 5 0 8
100 = 0.
9. Draw 2 diagonal lines
of symmetry.
10. Name this shape.
11. 130 – 90 =
12. What is the date a
fortnight 2 L from the 17th
of November?
13. 2.7 m = cm
14. €20.00 – €18.10 =
€
15. Circle the number
nearer to 4,000.
4,959 or 3,800
16. Write the numeral five
thousand and twenty-five.
17. The hair colour of eight
children is brown. How
many children have
black hair?
18. How many fewer
children have blonde
hair than brown and
black?
19. Write 2,971 in
expanded form.
+
+ +
20. 4.3 km =
m
21. 0.32 = 100
22. The capacity is
1,500 m . What is the
volume at B?
23. 90 + 30 =
m
24. 2 weeks and 6 days =
A
25. 3.2 + 0.9 =
C
B
BROWN BLACK
Review sample
days
BLONDE
58 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 71 – 9 =
2. 60 – 4 =
3. What is the perimeter of a rectangular office
25 m by 45 m?
4. 5 240 =
m
5. 80 + 60 + 20 =
6. Double 900.
7. Product of 4 and 9 =
8. What is the place value of the 2 in 2,500?
9. This is a net of a .
10. 0.9 + 0.1 =
11. Halve 18.
12. Is Z symmetrical?
13. Circle the oblique line.
14. 1 = m
15. 2.0 – 0.2 =
16. Write as a fraction. 50 cm = m
17. 7:03 =
18.
7 , 5 6 9
– 2 , 0 3 4
11
10
9
8
7
19. Draw the line of symmetry.
12
6
1
2
3
4
5
1. 1,000 – 31 =
2. 43 – 8 =
3. Mark the right angle.
4. 70 + 40 + 30 =
5. Write as a fraction. 25 cm = m
6. 4.0 – 0.4 =
7. Double 55.
8. What type of triangle?
9. 8.2 – 0.9 =
10. Write the highest number possible using the digits
4, 0, 7 and 9.
11. Circle the number nearer to 3,000.
2,965 or 3,421
12. Halve 28.
13. (5 × 9) ÷ (10 ÷ 2) =
14. Steven has 9 cars. Jane has 12 cars. How many
fewer has Steven? Complete the number sentence.
15. Write 8,288 in expanded form.
Review sample
16. 1 km = m
=
+ + +
17. 0.6 > 0.1 True False
18. 78 × 100 =
6 cm
11 cm
6 cm
Week 20
4 cm
2 cm
4 cm
19. 2 , 10 , 50 , , 1,250
20. 3 < 0.9 True False
20. 4, 20, 100, 500,
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 59

WEDNESDAY
THURSDAY
Week 20
1. 101 – 9 =
2. 29 + 7 =
1. 1,000 – 19 =
2. Write as a fraction. 30 cm = m
3. Write as a fraction. 20 cm = m 3. What shape has 4 triangular faces?
4. 3 – 0.3 =
5. 8 , 5 6 3
4. 230 – 90 =
– 2 , 0 5 2
6. Double 75.
7. 4 240 =
8. This net belongs to a
.
9. What is the missing factor of 36?
1, 2, 3, 4, , 9, 12, 18, 36
10. What is the date a week after Christmas Day?
12
11
10
11. 11:48 = 9
8
12. 98 × 5 =
13. (6 × 3) ÷ (6 ÷ 2) =
7
6
1
2
3
4
5
14. Halve 500.
15. Which is not a net of a cube?
A
B
16. 4 × 6 = 24
4 × 60 =
5. Double 85.
6. €14.50 + €8.50 = €
7. 6, 12, 18, , 30
8. €20.00 – €11.50 = €
9. 3 kg 315 g = g = . kg
10. Circle the number nearer to 6,000.
2,965 or 5,421
11. 9 × 3 =
12. What is the date a week before New Year's Day?
13. 10 – 0.6 =
14. What is the area of a grid 11 cm by 11 cm?
cm 2
15. 3 × 8 = 24
3 × 800 =
16. 0.7 + 1.4 =
17. Halve 900.
18. 1 1 2 , 2 1 2 , 4 1 2 , 8 1 2 , , 32 1 2
19. 200 ÷ 10 =
20. Circle the perpendicular line.
Review sample
17. 3 1 4 hours = hour(s) minute(s)
or
minute(s)
18. What is the perimeter of a fence around a
rectangular field 65 m by 25 m?
m
19. 4, 8, 12, 16,
20. 2.7 – 0.4 =
60 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
Make the numbers across and down total 15.
1. Use 7, 5, 8 and 3.
1. 104 – 9 =
2. 39 + 7 =
3. 110 – 60 =
17.
9 , 8 7 6
– 5 , 4 3 1
Week 20
4. Circle the oblique line.
18. 9, 18, 27, , 45
19. What type of triangle?
2. Use 4, 9, 6 and 5.
Tuesday
Colour the correct signs.
1. 9 × 7 kg 8 × 8 kg
2. 10 × 4 kg 5 × 8 kg
1.
Wednesday
Complete the patterns.
2. 890, 910, 930, 950, , 990
Thursday
APPS ON DEVICES
Mia
Ava
=2 =1
5. Write as a fraction.
75 cm = m
6. 5:52
11
10
9
8
7
=
12
6
1
2
3
4
5
7. 10 – 0.7 =
8. 24 – 9 =
9. 5 , 20 , 80 ,
10. 5 440 =
, 1,280
11. (7 × 3) ÷ (10 ÷ 10)
=
12. 40 + 90 =
13. 3, 6, 12, 24, ,
96
14. Is this a net of a cube?
20. Round 4,905 to the
nearest thousand.
21. What is the perimeter
of a fence line that is
45 m by 35 m?
m
22. Is N symmetrical?
23. If your fence cost
€20.00 per metre
length, how much
would you pay for 20 m
of fencing?
€
7 cm
11 cm
24. 6 × 7 = 42
Review sample
3
6 × 700 =
25. 400 ÷ 10 =
cm
1. Mia has more apps than Ava.
2. What is the sum of the apps?
15. Halve 700.
16. 3 kg 415 g
= g
= . kg
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 61

MONDAY
TUESDAY
Week 21
1. What is the time?
2. 16 + 7 =
3. This is an irregular
4. Circle the number nearer to 3,000.
2,960 or 3,420
5. Sam has 10 stickers. Conor has 22 stickers. How
many more has Conor?
Complete the number sentence.
6. The value of the 5 in 2.5.
7. Which sides are parallel?
A and C
A and B
8. 4 × 9 =
9. This angle is
acute.
right.
obtuse.
10. 0.3 > 1 True False
11. 3, 6, 12, 24,
12.
1
4 of 24 =
13. Write as a decimal. 50 cm = 0. m
14. 1 – 0.9 =
15. €20.00 – €10.20 = €
16. (15 – 5) × (7 ÷ 1) =
17. 2 hours 15 min. add 1 hour 30 min.
= hour(s) minute(s)
18. Write 3,907 in expanded form.
19. 30 + 80 =
+ +
20. Write the numeral
five thousand two hundred.
=
.
A
B
11
10
9
8
7
12
6
1
2
3
4
5
1. 8:55
minutes to
2. This is an irregular
3. 99 + 9 =
4. 40 + 7 + 6 =
5. 1,000 – 14 =
6. 36 ÷ 9 =
7. Circle the oblique line.
8. 47 × 2 × 50 =
9. 19 – 3 – 5 =
10. If you are measuring the capacity of a bucket,
which unit do you use?
kg cm g
11. 0.3 + 0.4 =
12. What is the area of this shaded shape?
squares
13. 1 > 0.8 True False
14. 14 × 0 =
C
Review sample
15. (3 × 4) × 5 = 3 × ( × 5)
16.
1
2 of 50 =
17. 300, 325, , 375, 400
march
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19
21 22 23 24 25 26
20
27
28 29 30 31
18. How many Mondays?
19. What day is the 1st of April?
20. What day is the 10th of April?
.
62 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 15
100 = 0.
2. 99 + 7 =
3. 104 – 7 =
4. 2 + 9 =
5. This is an irregular
6. Circle the perpendicular line.
7. This angle is
acute.
right.
obtuse.
8. Write as a decimal. 70 cm = 0. m
9. 0.7 + 0.3 =
10. 2 hours 30 min. add 2 hours 15 min.
11.
= hour(s) minute(s)
7
10 = 0.
12. When measuring the weight of an adult, which
unit do you use?
13. 60 + 40 =
kg cm g
14. Write 7,086 in expanded form.
+ +
15. Circle the number nearer to 1,000.
959 or 1,970
16. What is the chance of it raining today?
impossible unlikely
possible likely certain
17. Which lines are intersecting?
A
18. (2 × 5) × 4 = 2 × ( × 4)
19.
1
4 of 20 =
20. 30, 80, 130, , 230
B
.
1. 0.3 =
3
1
3
10
3
100
2. What is the chance of it being cloudy today?
impossible unlikely
possible likely certain
3. Jason has 15c. Helen has 12c. How many fewer
cents has Helen? Complete the number sentence.
4. A parallelogram has
c c = c
parallel lines.
non-parallel lines.
5. 1 hour 20 min. add 2 hours 30 min.
= hour(s) minute(s)
6. 103 – 9 =
7. 20, 80, 140, , 260
8. 4 – 0.3 =
9. 9 10 = 0.
10. Write as a decimal. 40 cm = 0. m
11. 3 + 9 =
12. (1 × 5) × 3 = 1 × ( × 3)
13. €10.00 – €2.80 = €
14. Which is the irregular pentagon?
Review sample
A
15. Circle the number nearer to 7,000.
B
7,001 or 8,524
16. What is the number after 9,997?
17. 40 + 90 =
18. (before) 8,000 (after)
19. 3 × 8 =
20. When measuring the length of a fence around a
garden, the recommended unit is
km. . kg. m.
Week 21
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 63

PROBLEM-SOLVING
FRIDAY REVIEW
Week 21
Monday
1. A 250-g packet of jelly beans costs €6.
What is the price of a kilogram?
€
2. Alex has 2 songs on his device. One song is
3 minutes 25 seconds. The other, 4 minutes
39 seconds. What is the total play time?
minute(s)
Tuesday
second(s)
1. Maeve and Stella have 9 pets altogether.
Stella has twice as many pets as Maeve.
How many pets does Stella have?
2. Mr Teacher parked his car on Sunday at
5 p.m. for half an hour. Will he receive a
parking fine?
Wednesday
1. The product of two numbers is 40. The
difference between them is 3. The two
numbers are
and .
2. Cliff puts whipped cream on a quarter of the
28 pancakes. How many don’t have cream?
Thursday
1. Write the digital time
4 hours later than the
analogue clock time.
2. Which four-sided shape
has four lines of symmetry?
A B C D
1. 6:50
2. 14 + 7 =
3. 102 – 7 =
to
4. What is the number
after 8,999?
5. €10.00 – €3.50 =
€
6. This is an irregular
7. 38 × 2 × 50 =
8. Circle the number
nearer to 4,000.
4,959 or 4,160
9. 0.5 > 1
True
.
False
10. What is the chance of
it being above 35 °C
today?
impossible
unlikely
possible
likely
certain
11. (11 – 5) × (100 ÷ 10) =
12. Julie has 20 marbles.
Karen has 12 marbles.
How many more has
Julie? Complete the
number sentence.
=
13.
4
10 = 0.
14. 2 – 0.4 =
15. A rhombus has
parallel lines.
non-parallel lines.
16. When measuring your
weight, the unit of
measurement is
km. kg.
. g.
17. This angle is
acute.
right.
obtuse.
18. 40 + 90 =
19. What is the area of this
shaded shape?
20. 0.7 + 0.4 =
squares
Review sample
11
10
9
8
7
12
6
1
2
3
4
5
a.m.
21. Write as a decimal.
40 cm = 0. m
22. 30, 90, 150, ,
270
23. 3 × 9 =
24. Write 8,085 in expanded
form.
25.
+
1
4 of 60 =
+
64 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 88 + 12 =
2. 14 – 7 =
3. Circle the number nearer to 9,000.
9,050 or 8,995
4. Sarah has three bags, each containing 5 sweets.
How many sweets altogether?
Complete the number sentence.
5. Order from least to greatest value.
2,501 1,998 3,002
6. 4
10 = 0.
, ,
7. Share €50.00 equally among 20 people.
€ each
8. 0.1 × 1 =
9. Circle the perpendicular line.
10. 101 – 9 =
11. 3.6 m = cm
12. Write 5,847 in expanded form.
13. This angle is
acute.
right.
obtuse.
14. 6 + 9 + 4 =
=
+ + +
15. Which digit's value is 0.4?
2.48 4.28 42.8
16. 1 > 1.1 True False
17. When measuring weight, you select from which
two units?
km kg g cm m
18. 4, 8, 12, 16, , 24, 28,
19. (7 + 4) + (30 ÷ 3) =
20. Halve 100.
1. 64 + 16 =
2. 13 – 8 =
3. Place value of the 4 in 2.24.
4. A square is a -dimensional shape.
5. (8 × 3) × 5 = 8 × ( × 5)
6. Is a cube a 3-dimensional shape?
7. 9 10 = 0.
8. A pentagon has
parallel lines.
non-parallel lines.
9. Order from greatest to least value.
7,009 7,090 4,998
10. 0.1 × 5 =
, ,
2
11.
3 = 6 = 12
12. This angle is
acute.
right.
obtuse.
13. What is the chance of your class eating lunch at
midday?
impossible unlikely
possible likely certain
14. When measuring capacity, you select from which
two units?
Review sample
15. 102 – 7 =
km kg g m
16. What is the value of the 7 in 2.47?
17. 8, 16, 24, 32, , 48, , 64
18. Double 350.
19. 30 + 90 + 30 =
20. Write as a decimal. 10 cm = 0. m
Week 22
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 65

WEDNESDAY
THURSDAY
Week 22
1. 8:55
to
2. 6 + 7 + 2 =
3. The place value of the 9 in 3.69.
4. What is the value of the
9 in the above number?
5. Circle the number nearer to 5,000.
5,445 or 4,870
6. 1 km 700 m = m = . km
7. 6
10 = 0.
8. Order from least to greatest value.
6,089 6,100 3,985 3,399
9.
3
4 = 8
10. This angle is
, , ,
acute. right. obtuse.
11. 0.1 × 7 =
12. When measuring length, you select from which
two units?
13. Halve 14.
km kg m cm g
14. Circle the oblique line.
15. 25, , 75, 100
16. The chance of the spinner
landing on an odd number is
impossible.
possible.
certain.
17. 2 × 9 × 5 =
18. 104 – 8 =
19. Double 16.
20. 60 + 30 + 40 =
unlikely.
likely.
1. 2:15
past
2. (9 × 4) × 2 = 9 × ( × 2)
3. Are a circle and a sphere both 3-D?
4. 104 – 6 =
5. 3 kg 100 g = g = . kg
6. 0.2 + 0.8 =
7. 1 10 = 0.
8. 40 + 50 + 70 =
9. 0.1 × 10 =
10. This angle is
acute.
right.
obtuse.
11. Order from greatest to least value.
7,899 9,200 4,890 9,020
, , ,
2
12.
5 = 10
13. How many angles in a hexagon?
14. If you are measuring the capacity of a cup, it is in
m . . kg. g.
15. 2 × 50 × 17 =
Review sample
8 2
6 4
16. 40, , 120, 160
17. What is the place value of the 7 in 7,411?
18. Write as a decimal. 60 cm = 0. m
19. Double 19.
20. What is the chance of your class going on a
school trip this month?
impossible unlikely
possible likely certain
66 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
Write in the missing digits.
1. 3 2 2.
+ 3 5
3 6 0
Tuesday
1. A page of stickers is arranged in 5 columns
and 6 rows. How many stickers are on the
page?
2. At a triathlon there were 10 rows of 15
bikes. How many bikes were there?
Wednesday
1. A tour bus left Dublin at midday and drove
around the city until 4.52 p.m. How long
was the tour?
hours
minutes
2. A delivery van left the depot at 7.05 a.m.
and returned at 2.25 p.m. The van was out
for hours and minutes.
Thursday
1. Colour both jugs to show 500 m .
1 Review
4 7
+ 4
1 4 1
2. How many triangles can you find?
1. 3:45
2. 104 – 8 =
to
3. 6 + 7 + 8 =
4. Circle the perpendicular
line.
6. 2 × 17 × 5 =
7. 35, , 105, 140
8. 1 m 30 cm
= cm
9. What is the place value
of the 3 in 2.23?
10. 0.1 × 7 =
12. Write 3,437 in
expanded form.
+
+ +
13. Double 450.
14. What is the chance
that a coin will land on
'heads'?
impossible
unlikely
possible
likely
certain
15. 5 + 8 =
16. This angle is
acute.
5. When measuring the
length of a house, which right.
unit of measurement
would you use?
km m
obtuse.
17. 0.4 + 0.6 =
m kg 18. 7 10 = 0.
g
19. (2 × 3) × 5 =
2 × ( × 5)
20. A pentagon has
parallel lines.
non-parallel lines.
21. Order from least to
greatest value.
9,964 9,899
9,989 9,199
, ,
11. There are ten dogs, each
,
with four bones. How
many bones in total? 22. (6 + 7) + (40 ÷ 5) =
Complete the number
sentence.
23. Circle the number
= nearer to 8,000.
sample
1
7,851 or 8,952
24. 3 + 8 > 5 × 2
True False
25. 1 m 35 cm
= cm
= . m
Week 22
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 67

MONDAY
TUESDAY
Week 23
1. 10
12 = 6
2. 204 – 7 =
3. What is the perimeter of a
regular pentagon with 6-cm sides?
4. 15 – 8 =
5. Write as a decimal. 70 cm = 0. m
6. Order from greatest to least value.
0.9 1 0.5
, ,
7. 2 hours 15 min. add 3 hours 30 min.
= hour(s) minute(s)
8. 1,197 > 1,201 True False
9. Circle the number nearer to 2,000.
2,050 or 3,050
10. The line of symmetry is
11. 4 × 6 =
12. 3
10 = 0.
horizontal.
vertical.
diagonal.
13. What type of triangle?
14. 0.9 + 0.1 =
15. 1,500 m = m
16. (2 × 6) × 7 = 2 × ( × 7)
17. 6 38 = r
18. Does a rhombus have parallel lines?
19. 0.5 × 3 =
4 cm
4 cm
20. What is the chance of your class doing P.E. this
week?
impossible unlikely
possible likely certain
4 cm
cm
1.
3 = 6
9
2. Perpendicular means 'at a right angle to'.
True
3. 99 + 7 =
4. 14 – 8 =
5. 0.5 + 0.6 =
6. 9 × 0 =
False
7. 1 hour 30 min. add 4 hours 30 min.
= hour(s) minute(s)
8. (6 × 10) × 3 = 6 × ( × 3)
9. What is the perimeter of a grid 7 m by 5 m?
m
10. What is the area of a grid 7 m by 5 m?
m 2
11. 1,000 – 8 =
12. 2,150 m = km m
13. Write as a decimal.
25 cm = 0. m
14. 0.2 × 2 =
15. 5 29 = r
16. 3 × 9 =
17. 1 4 of 120 =
Review sample
18. 6 10 = 0.
19. Double 75.
20. The line of symmetry is
horizontal.
vertical.
diagonal.
68 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 4:50
2. 99 + 9 =
to
3. 500, , 400, 350, 300, 250
4. 15 – 6 =
5. 2 × 5 × 36 =
6. Double 45.
7. Halve 110.
8. Circle the number nearer to 8,000.
7,975 or 8,420
9. 2,250 m = m
10. €20.00 – €3.60 = €
11. 12 × 4 =
12. 1,500 m = km m
13. Is your ruler symmetrical?
14. What is the chance of you going to the beach this
afternoon?
15. 1 – 0.5 =
16. 0.3 × 2 =
impossible unlikely
possible likely certain
17. How many Fridays?
JUNE
30Review
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29
18. What day is the 24th of June?
19. What day is the 31st of May?
20. What is the date 9 days after the 4th of June?
1. 12:10
past
2. Write as a decimal. 40 cm = 0. m
3. (5 × 5) × 4 = 5 × ( × 4)
4. 119 + 6 =
5. Order from least to greatest value.
0.7 0.4 1.0 0.9
, , ,
6. 6 vases each hold 5 flowers. How many flowers
altogether? Complete the number sentence.
7. 18 – 9 =
8. 0.4 × 2 =
9. €10.00 – €1.70 = €
10. The line of symmetry is
horizontal.
vertical.
diagonal.
11. (12 – 6) – 4 =
12. 70, 140, 210, , 350
13. 7 × 8 =
14. Sides A and B are
parallel.
=
non-parallel.
15. Which unit of measurement would you use when
measuring oil for cooking?
g m cm
sample
16. 2 – 0.1 =
17. Write the numeral five thousand nine hundred.
18. 1 < 0.9 True False
19. 9 10 = 0.
20. Oblique means 'slanting at an angle'.
True False
A
B
Week 23
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 69

PROBLEM-SOLVING
FRIDAY REVIEW
Week 23
Monday
4th Class Happy Moments
BIRTHDAY
FRIDAY
WEEKEND
ICE CREAM
1. How many pupils were surveyed?
2. How many enjoyed the weekend
more than having ice cream?
Tuesday
1. A chef has 3 different measuring cups;
1
4 cup, 1 2 cup and 1 cup.
A recipe needs 2 1 2 cups of flour. Which
two measuring cups should he use?
cup and
cup
2. Another recipe needs 3 4 of a cup of sugar.
Which two measuring cups could the chef
use?
cup and
Wednesday
cup
Two boys timed each other running from their
classroom desk to the door and back.
00:0835 00:0795
Ethan
1. Who was faster?
0 5 10 15 20 25 30
Number of Pupils
Liam
2. The time difference was 0. seconds.
Thursday
1. The product of two numbers is 18. The
difference between the numbers is 3. The
two numbers are
and .
2. The product of two numbers is 24. The
difference between the numbers is 2. The
two numbers are
and .
1.
2
3 = 6
2. Write as a decimal.
60 cm = 0. m
3. 1 hour 15 min. add 3
hours 30 min.
= hour(s)
4. 1,000 – 9 =
minute(s)
5. €10.00 – €1.80 =
€
6. 1 4 of 160 =
7. Write the numeral eight
thousand six hundred.
8. What is the perimeter
of a regular pentagon
with 4-cm sides?
9. 16 – 7 =
cm
10. Sides A and B are
B
parallel.
non-parallel.
11. A bus stops at equal
time intervals every 20
minutes. If the last stop
was at 4.20 p.m., what
time is the next stop?
12. 99 + 6 =
p.m.
13. 0.4 + 0.6 =
14. 0.4 × 2 =
A
15. Circle the number
nearer to 4,000.
3,999 or 4,005
16. The line of symmetry is
horizontal.
vertical.
diagonal.
17. 80, 160, , 320,
400
18. 1 – 0.5 =
19. 2,500 m =
20. Double 75.
m
21. What type of triangle?
5 cm
22. What is the chance
of you watching TV
straight after school?
impossible
unlikely
possible
likely
certain
23. When measuring
heights of children,
which unit of
measurement would
you use?
kg
cm
24. 1 < 0.6
True
25. 9 10 = 0.
5 cm
Review sample
5 cm
km
False
70 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Tick the correct box.
The angle of the fish’s mouth is
< a right angle.
> a right angle.
= a right angle.
2. Share €20.00 equally among 8 children.
€
3. 2,250 m = m
4. (10 × 4) × 3 = 10 × ( × 3)
5. 999 + 7 =
6. What is the place value of the 7 in 2.97?
tenths hundredths
7. 3 hours 20 min. add 2 hours 15 min.
= hour(s) minute(s)
8. 160 – 70 =
9. The line of symmetry is
horizontal. vertical. diagonal.
10. 0.7 × 3 =
11. 8,000 , , 4,000 , 2,000
12. How long is half a metre of string? cm
13. This is an irregular
1
14.
3 = 6 = 9
15. Write as a decimal. 75 cm = 0. m
16. (700 ÷ 7) ÷ (20 ÷ 2) =
11
10
12
2
9
3
17. = :
8
7
6
1
4
5
18. If a bus is due to arrive at 6.15 p.m. and your
digital watch displays 5.55 p.m., how many
minutes before it is due?
19. 7
10 = 0.
20. 105 – 8 =
minutes
.
1. 3 10 of = 21
2. 0.9 × 3 =
3. 4 39 = r
4. 2 × 39 × 5 =
5. 6,250 m = km m
6. 0.3, 0.6, 0.9,
7. How long is 1 4 of a metre of ribbon? cm
8. Pair the parallel sides.
and
and
and
and
9. What is the missing
measurement?
m
10. Write the largest number possible
using the digits 3, 0, 4 and 9.
11. Order from greatest to least value.
0.7 1.2 0.9 1.1
12. (30 ÷ 5) × (15 ÷ 3) =
, , ,
13. Share 25 cakes equally among 5 people. How
many each? Complete the number sentence.
14. What is the area of a grid 9 m by 5 m? m 2
15. What is the chance of getting homework today?
impossible unlikely
possible likely certain
16. 1.5 km = m
17. 8,900 > 7,999 True False
18. 994 + 9 =
19. 103 – 9 =
20. How many ninths in four wholes?
G
=
H
F
1,500 m
Review sample
1
? m
A
E
B
D
C
Week 24
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 71

WEDNESDAY
THURSDAY
Week 24
1. 7:20
past
2. How many sixths in 3 wholes?
3. 0.8 × 3 =
4. 2.4, 2.6, 2.8,
5. Write as a decimal. 80 cm = 0. m
6. 3,500 m = m
7. 204 – 9 =
8. 5 hours 45 min. add 2 hours 10 min.
= hour(s) minute(s)
9. (9 × 2) × 5 = 9 × ( × 5)
10. Share 30 sweets equally among 3 people. How
many each? Complete the number sentence.
11. How many angles has a parallelogram?
12. Order from least to greatest value.
1.4 0.8 0.1 2.0
13. (60 ÷ 5) – (4 ÷ 1) =
=
, , ,
14. 36, 42, 48, , 60
15. 60 + 30 + 70 =
16. 7 39 = r
17. 1.5 m = cm
18. Which triangle has a right angle?
A B C
3 cm
5 cm
4 cm
1. 1,000 – 14 =
2. 0.9 × 4 =
3. The line of symmetry is
horizontal.
vertical.
diagonal.
4. Write the largest number possible using the digits
7, 9, 0 and 4.
5. 0.3 < 1 True False
6. 9, 18, 27, , 45, 54
7. 6 53 = r
8. How long is 3 4 of a metre-length pole?
9. 4 × 7 =
10. 2 – 0.5 =
cm
11. How many sides has a rhombus?
12. 40 + 90 =
13. Product of 6 and 7 =
14. 8 62 = r
15. 42 = 6 × 8 True False
16. (99 ÷ 11) – (6 ÷ 3) =
17. 1.5 kg = g
18. 7,750 m = km m
Review sample
3 cm
3 cm
3 cm
3 cm
4 cm
4 cm
19. 210 – 70 =
20. A bus is due to arrive at 3.25 p.m. The time is
2.50 p.m. How many minutes before it is due?
minutes
19. 1
10 = 0.
11
10
12
20.
9
3 =
8
7
6
1
2
4
5
:
72 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Draw lines to match the triangles to the
words.
A B C
scalene equilateral isosceles
2. How many triangles
can you find?
SAVINGS
Tuesday
Conor is saving money each week.
1. Which week
did Conor save
€1.50?
2. How much has
Conor saved in
4 weeks?
€
Wednesday
1. Which week did Conor not save any money?
2. In Week 5, Conor spent €2.75 of his
savings. How much money has he now?
€
€3.00
€2.50
€2.00
€1.50
€1.00
€0.50
€0.00
Week 1 Week 2 Week 3 Week 4
WEEKS
Thursday
1. A florist arranged 1 rose for every 4 tulips in
a vase of 40 flowers. How many tulips were
in the vase?
2. A librarian ordered 6 books each for
science, history and geography. Write this as
a number sentence.
=
1. 6:10
2. 0.7 × 3 =
3. 60 + 80 =
4. 2,050 m =
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 73
past
5. (10 × 5) × 3 =
10 × ( × 3)
m
6. 3 hours 20 min. add 1
hour 15 min.
= hour(s)
minute(s)
7. The line of symmetry is
horizontal.
vertical.
diagonal.
8. How long is 1 4 of a
metre of string?
cm
9. Write as a decimal.
75 cm = 0. m
10. 250 – 70 =
11. 9, , 27, 36
12. 1,000 – 19 =
13. How many angles has a
rhombus?
14.
11
10
9
8
7
12
6
=
:
1
2
3
4
5
15. Order from least to
greatest value.
1.3 0.9 2 2.1
16. 9,099 > 9,100
True
, ,
,
False
17. Share 20 flowers
equally among 4 vases.
Complete the number
sentence.
=
18. 2.5 m = cm
19. (600 ÷ 10) × (100 ÷ 10)
=
20. What is the cost of 7 kg
of peanuts at €4.00 per
500 g?
€
21. 7 48 =
22. 203 – 8 =
23. What is the area of a
shape 8 m by 7 m?
Review sample
24. 8 × 9 =
r
m 2
25. If a bus is due to arrive
at 8.05 p.m. and it is
7.45 p.m., how many
minutes before the bus
is due?
minutes
Week 24

MONDAY
TUESDAY
Week 25
1. 6:58
minutes to
2. 3,950 m = m
3. Which lines are intersecting?
A
4. (6 × 3) × 4 = 6 × ( × 4)
5. 0.7 + 2 =
6. 5 × 47 × 2 =
B
7. Is a square 2-D or 3-D?
8. 410 – 70 =
9. What 2-D shape will
be seen after the cut?
4
10.
8 = 2
11. €16.50 + €4.50 = €
12. 2 hours 30 min. add 1 hour 45 min.
= hour(s) minute(s)
13. (426 ÷ 6) = (420 ÷ 6) + (6 ÷ 6)
= +
=
14. 1,000 – 110 =
15. 0.6 × 4 =
16. 0.2 = 10
17. What do the letters
represent on this graph?
18. The graph is a
pictogram. pie chart. bar chart.
19. Which month had the hottest days?
1. 2 3 = 6 = 9
2. Which instrument would you use to measure the
weight of flour between 100 and 1,000 g?
kitchen scales
3. 0.8 + 2 =
4. This is an irregular
5. €22.25 + €5.75 = €
11
10
12
6. 9
3 =
8
7
6
1
2
4
5
7. 0.5 = 10
8. What 2-D shape will
be seen after the cut?
9. 18 × 20 × 5 =
10. What shape is this?
11.
1
2 > 1 5 True False
12. 1,000 – 105 =
:
bathroom scales
13. 3,450 m = km m
14. 5 × €1.50 = €
Review sample
15. What is the chance of
landing on a single digit?
16. 33 ÷ 11 =
in
17. (5 + 7) ÷ (12 ÷ 4) =
18. How long is 1 5 of a metre? cm
19. 206 ÷ 2 =
20. 250 , 500 , , 1,000
.
20 5
15 10
20. Which month was the coldest?
74 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 1,000 – 11 =
2. 0.6 + 0.7 =
3. €31.75 + €9.25 = €
4. What 2-D shape will
be seen after the cut?
1. 91 – 9 =
2. 1 – 0.9 =
3. 47 + 23 =
4. 3 hours 30 min. add 2 hours 30 min.
= hour(s) minute(s)
Week 25
5. 1 4 of 100 =
6. 4,050 m = m
7. (9 × 5) × 2 = 9 × ( × 2)
8. 306 ÷ 6 = (300 ÷ 6) + (6 ÷ 6)
9. 0.8 × 5 =
= +
=
10. 0.9 =
10
11. 9,089 > 8,999 True False
12. How long is 3 5 of a metre? cm
13. 50 + 80 =
14. What is the perimeter of a square with 5-cm
sides?
cm
15. €20.00 – €7.90 = €
16. What is the number after 9,989?
OCTOBER
17. What day is the 22nd?
18. Circle Halloween on the calendar.
19. How many Wednesdays?
20. What is the date 10 days after the 3rd?
5. 1.0 =
10
6. The line of symmetry is
horizontal.
vertical.
diagonal.
7. How many fifths in 1 whole?
8. €29.25 + €8.75 = €
9. 1 5 of 10 =
11
12
10 2
10. = :
9
3
8
7
6
1
4
5
11. 750 – 80 =
12. 1.5 = m
13. 0.9 × 5 =
14. What is the chance of
landing on an odd number?
in
15. 5,090 m = km m
16. What is the area of a rectangle 4 m by 6 m?
m 2
17. A sphere is
two-dimensional.
18. €20.00 – €8.90 = €
19.
1
4 of 200 =
8 3
6 4
Review sample
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
three-dimensional.
20. Write the numeral five thousand one hundred.
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 75

PROBLEM-SOLVING
FRIDAY REVIEW
Week 25
Monday
1. The distance between the towns is
km.
2. From the sign to Ashton and back is
km.
Tuesday
1. Liam had a stack of 50c coins. He spent
€2.75 and had €1.75 left. How much did he
have at the start?
€
2. How many 50c coins did he have at the
start?
Wednesday
Write in the missing digits.
1. 2 1 1 2.
– 5
1 7 6
Thursday
1. The difference between two numbers is 4.
Their product equals 32.
The numbers are and .
2. A chef requires a 1 4 cup of lemon juice for
every 500 m of cream. How much lemon
juice does he need if 2 of cream is used?
cup(s)
45 km Ashton
60 km Oakby
7 8
+ 1 3
2 1 4
1. 2 3 = 6
2. €41.25 + €8.75 =
€
3. What is the time 25
minutes after 7.50 p.m.?
4. 0.6 + 3 =
5. 0.3 = 10
6. This is an irregular
7. 720 – 70 =
8. 0.8 × 5 =
9. 5,905 m =
m
10. What 2-D shape will
be seen after the cut?
11.
1
4 of 200 =
12. 204 – 9 =
13. The chance of landing
on a zero is
in .
.
14. Which month had no
rainfall?
15. Which month was the
wettest?
16. More than 400 mm of
rain fell in January.
True
17. (6 × 5) × 2
False
= 6 × ( × 2)
18. 1,000 – 12 =
19. 1 hour 45 min. add 3
hours 30 min.
= hour(s)
20. 60 + 80 =
minute(s)
21. How long is 3 5 of one
metre?
Review sample
cm
6
22.
8 = 3
23. What number is after
7,659?
5 10
0 20
24.
1
5 > 1 2
True
25. 19 × 20 × 5 =
False
76 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 2,000 + 4 + 600 + 70 =
2. (3 × 7) × 4 = 3 × ( × 4)
3. Share €90.00 equally among 9 people.
€ each
4. Share €90.00 equally among 18 people.
€ each
5. 70 + 60 =
6. 300 – 70 =
7. 4,005 m = km m
8. Write 7,755 in expanded form.
9. Draw a reflection of:
10. 7 + 7 + 7 + 7 = 4 × 7 =
11. Is a tree symmetrical?
+ + +
12. 3,909 < 4,990 True False
13. 3 hours 30 min. add 2 hours 45 min.
= hour(s) minute(s)
14. 7
10 = 0.
15. Share 30 apples equally among 6 people. How
many each? Complete the number sentence.
16. Double 17.
17. What 2-D shape will be
seen after the cut?
18. What is the date a week before New Year’s Eve?
19. 6 + 7 + 4 =
20.
4 3
× 2
=
1. 7, 14, 21, 28, , 42
2. How long is 4 5 of 1 metre? cm
3. 8 + 9 =
4. 0.8 + 10 =
5. 60 + 90 =
6. 0.9 + 0.1 =
7. The line of symmetry is
horizontal.
vertical.
diagonal.
8. This is a .
9. 5 × 8 =
10. Julie weighs 34.2 kg. Todd weighs 35.7 kg.
How much do they weigh altogether?
11. 49
100 = 0.
kg
12. 4,050 m = m
13.
11
10
9
8
7
12
6
1
2
3
4
5
=
14. What is the difference between 14 and 8?
15.
16. Double 36.
17. 9 + 7 + 4 =
18. Tick which is more likely to happen.
19. 60 × 5 =
20.
4 1
× 2
Review sample
You will fly to London tonight.
You will go to bed tonight.
4
5 = 10
:
Week 26
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 77

WEDNESDAY
THURSDAY
Week 26
1. 10 weeks and 4 days = days
2. €11.25 + €14.75 = €
3. €20.00 – €3.80 = €
4. 30 + 90 =
5. What is the perimeter of a hexagon with 8-cm
sides?
6. 40 ÷ 5 =
cm
7. 2 hours 45 min. add 4 hours 45 min.
= hour(s) minute(s)
8. What type of triangle?
9. 7,090 m = km m
10. What 2-D shape will be
seen after the cut?
11. 14 – 9 =
12. Which is nearer to 3,000?
13.
2,925 3,065
3
4 = 8
14. 320 – 40 =
15. The sum of 5 and 7 =
16. Share €45 equally among 9 people. How much
each? Complete the number sentence.
€ = €
17. 0.3 × 7 =
18. 2
10 = 0.
19. Halve 70.
20. 40 × 5 =
4 cm
7 cm
4 cm
1. Round 7 × 28.
7 × 20 7 × 30
2. 302 – 9 =
3. Which number is nearer to 2,000?
1,550 2,350
4. What is the perimeter of
a rectangle 25 cm by 40 cm?
11
12
10 2
5. = :
9
3
6.
8
7
6
1
4
5
2 3
× 3
7. 40 + 70 =
8. 1 4 of 500 =
cm
9. There is 2.2 kg of flour, 3.1 kg of sugar and 1.6 kg
of cocoa powder. What is the total weight?
kg
10. This is an irregular .
11. Halve 72.
12. 0.1 × 5 =
13. How long is 1 4 m of ribbon? cm
14. The chance of landing
on a multiple of 8 is
15. 430 – 80 =
in .
16. 7,999 m = m
17. €20.00 – €0.80 = €
18. 6 × 9 =
19. The line of symmetry is
horizontal. vertical. diagonal.
20. Write the numeral
seven thousand and fifty-seven.
32 8
Review sample
24 16
78 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
5 cm
Monday
4 cm
1. Draw the lines of symmetry.
2. Mike made a fruit basket. Of the total fruit,
5 were apples, 5 8 were bananas and 1 4
were oranges. How many pieces of fruit did
Mike use?
Tuesday
1. The most played instrument was the
2. The difference from the most to least played
instrument was
A
Wednesday
00:1260 00:1370
B
.
pupils.
00:1150
1. These are the times for a 50-m sprint. Order
them from first to third.
2. The difference in time from first to third is
1.10 sec. 2.20 sec. 1.50 sec.
Thursday
1. A 250-g packet of jelly beans costs €5. How
much for 1 kilogram?
€
5 cm
5 cm
4 cm
4 cm
4th Class Instruments Played
PIANO
Guitar
VIOLIN
0 5 10 15 20 25
Number of Pupils
4 cm
2. 100, 99, 97, 94, 90, 85, , 72
C
1. 9 weeks and 2 days =
days
2. Share €270.00 equally
among 9 people.
€ each
3. Share €270.00 equally
among 18 people.
€ each
4. What 2-D shape will be
seen after the cut?
5. 5, 20, , 320,
1,280
6. (9 × 5) × 1
= 9 × ( × 1)
7. 80 × 5 =
8. 7 × 9 =
9. 0.3 × 5 =
10. 250 – 90 =
11. €13.25 + €7.75 =
€
12. 6,008 km =
13. 90 + 70 =
km
14. The line of symmetry is
horizontal.
vertical.
diagonal.
m
15. What is the date a week
after New Year’s Eve?
16. 2 hours 30 min. add 1
hour 50 min.
= hour(s)
17. Halve 150.
minute(s)
18. Share 30 €1 coins
equally among 10
people. How much
each? Complete the
number sentence.
€
= €
19. Draw a reflection of:
20.
3 4
× 2
21. Which is nearer to
2,000?
1,880 2,110
22. How many minutes
difference from
3.30 p.m. to 6 p.m.?
Review sample
23. How long is 3 5 of one
metre?
cm
24. Dana weighs 34.2 kg.
Orla weighs 38.7 kg.
How much do they
weigh altogether?
kg
25. 4,090 m =
m
Week 26
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 79

MONDAY
TUESDAY
Week 27
1. What is the time?
minutes to
2. The line of symmetry is
horizontal.
vertical.
diagonal.
3. (9 × 5) × 3 = 9 × ( × 3)
4. 2, 6, 12, 20, , 42
5. 0.3 × 8 =
6. 320 – 70 =
7. €12.25 + €8.75 = €
8. 0.4 = 10
9. What is 2 5 of 100 m? m
10. 4,000 – 4 =
11. This is an irregular
12. 7 + 6 + 9 =
13. 9 × 8 =
14. What is the time 30 minutes after 2.15 p.m.?
15. 1 4 of 32 =
16. 19
100 = 0.
17. This is a
18. How many tens in five hundred?
19. Liam wrote the date 7.8. What month is it?
20. Write the numeral five thousand and thirty-five.
9
10
8
.
11
7
12
.
6
1
5
2
4
3
1. What is the time?
2. 0.6 + 0.4 =
minutes past
3. If the time is 8.35 a.m., what
will the time be in half an hour?
4.
2 3 1
× 2
5. 5 × 0.4 =
6. 410 – 40 =
7. What length is 1 2 of a 10-metre fence? m
8. Round 7,591 to the nearest thousand.
9. 250 m = 1 4 = 0.
10. 9.5, , 10.5, 11, 11.5
11. Bob has 12 stickers. Joe has 14 stickers. How
many altogether? Write the number sentence.
12. 5,000 – 10 =
13. 8 + 7 =
14. Which number is nearer to 8,000?
8,035 7,970
15. What 2-D shape will be seen
after the cut?
Review sample
16. Melanie weighs 39.6 kg. Zoe weighs 34.1 kg.
How much lighter is Zoe?
17. 14 ÷ 2 =
18. 70 × 4 =
19. 63 + 27 =
kg
=
9
10
8
11
7
12
6
1
5
2
4
3
20. 0.36 = 100
80 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
2 L
1. 3:38
2. 302 – 9 =
3. 7 + 6 + 8 =
minutes to
4. Share €120.00 equally among 10 people.
5.
€ each
3 0 4
× 2
6. 3,000 – 35 =
7. 430 – 50 =
8. Round 2,400 to the nearest thousand.
9. If the time is 2.50 p.m., what
will the time be in half an hour?
10. Order from greatest to least value.
2.2 0.9 3.0 1.9
, , ,
2
11.
3 = 6
12. How many tens in nine hundred?
13. 47
100 = 0.
14. This is an irregular
15. 2.5, , 3.5, 4, 4.5
16. Katy is 1 m 18 cm tall. Beth is 112 cm tall.
How much taller is Katy?
cm
17. Colour 750 m .
18. 5 = 1 2 of
6
19.
10 = 20
20. Draw 2 diagonal
lines of symmetry.
.
1. 1:14
2. 999 + 8 =
3. 37 – 9 =
4. 42 + 38 =
5. 1 – 0.1 =
6. 18
100 = 0.
past
7. 15 – 8 – 4 =
8. What will be the time
30 minutes after 12.25 p.m.?
9. 9 × 0.4 =
10. The line of symmetry is
horizontal.
vertical.
diagonal.
11. 420 – 90 =
12. (8 × 4) × 6 = 8 × ( × 6)
13. 0.9 = 10
14. 2,000 – 27 =
15. 4 kg 575 g = g = . kg
Mon. Tue. Wed. Thur. Fri.
English English English Maths Maths
BREAK
Maths Maths Maths English English
LUNCH
SPHE Science Geography Gaeilge History
P.E. Science Music Art Drama
Review sample
1
16. How many maths lessons a week?
17. How many music lessons a week?
18. Which lesson is last on Monday?
19. Which lesson is straight
after lunch on Friday?
20. How many more English
lessons than science lessons?
Week 27
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 81

PROBLEM-SOLVING
FRIDAY REVIEW
Week 27
Monday
1. What is the cost of 1 kg of cheese at €1.50
per 250 g?
€
2. The cost of 2 of orange juice at 95c per
litre is
€ .
Tuesday
1. What is the chance of landing on a multiple
of 9?
1 in 9
3 in 4
1 in 4
2. Sam looked at the clock twice on the same
day. What was the time difference?
hours
10:00 A.M. 10:00 P.M.
Wednesday
Write the time differences.
1. 8:35 P.M. 9:10 A.M.
hours
minutes
2. 11:25 P.M. 4:55 P.M.
hours
Thursday
minutes
Colour the correct signs.
15 9
27 18
1. 7 × 6 kg 14 × 3 kg
2. 4 × 18 kg 2 × 20 kg
1. 4:37
2. 997 + 8 =
3. 402 – 9 =
minutes to
4. Share €150.00 equally
among 10 people.
€ each
5. 5 × 0.8 =
6. What 2-D shape will be
seen after the cut?
7. The line of symmetry is
horizontal.
vertical.
diagonal.
8. (3 × 4) × 2
= 3 × ( × 2)
9. €11.75 + €8.25 =
€
10. What is 4 5 of 100
metres?
m
11. This is an irregular
.
12.
13. 0.8 = 10
14. 27 – 9 =
15. What length is 1 4 of
a 20-metre swimming
pool?
m
16. 1 4 = m
17. Order from greatest to
least value.
2.3 0.8 3.1 1.8
, ,
18. 3.5, , 4.5, 5,
5.5
19. 1 4 of 28 =
20. Ben is 120 cm tall.
Karina is 1 m 23 cm
tall. How much taller is
Karina?
,
cm
21. What is the cost of 2 kg
of chocolate at €4.50
per 500 g?
€
22. 37 + 63 =
23. €20.00 – €3.30 =
€
2 3 2
× 2
Review sample
24. How many tens in six
hundred?
25. 2,000 – 21 =
82 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 12:19
2. 9,990 + 9 =
minutes past
3. Tick which is less likely to happen this week.
You will wash your hair.
You will dye your hair pink.
4. 7 + 5 + 9 =
5. Share €210.00 equally among 21 people.
€ each
6. Product of 7 and 8 =
7. 68 + 32 =
8. 0.5 > 1 True False
9. 9,500 m = m
10. Round 7,850 to
the nearest thousand.
11. 3,789 > 3,699 True False
12. 4 652
= (400 ÷ 4) + (200 ÷ 4) + (40 ÷ 4) + (12 ÷ 4 )
= + + +
=
13. Can a circle tessellate?
14. How many minutes difference?
15. 9 × 7 =
5:40 P.M. 6:15 P.M.
16. 3.3 – 0.9 =
17. The line of symmetry is
horizontal. vertical. diagonal.
18. 80 + 9 + 90 =
19.
4 0 3
× 2
20. What is the place value
of the 2 in 2,500?
1. 1:36
2. 301 – 7 =
3. 6 + 9 + 4 =
4. 28 + 72 =
minutes to
2
5.
5 = 4
6. 2 hours 50 min. add 3 hours 35 min.
= hour(s) minute(s)
7. 2 km 150 m = m
8. The cross-section made after the
cut will show what 2-D shape?
9. 0.7 × 5 =
10. The line of symmetry is
horizontal.
vertical.
diagonal.
11. Write 2,974 in expanded form.
+ + +
12. David has 25 marbles. Jodie has 21. How many
fewer has Jodie? Complete the number sentence.
13. What is 3 4 of 200 metres? m
Review sample
14. 4 × 8 =
15. How many minutes difference?
2:25 A.M. 2:40 A.M.
16. 3.7, 3.8, 3.9, , 4.1
17. 40 + 50 + 70 =
+ +
18. 3 372 = 3 300 + 60 + 12 =
19. (7 × 1) × 4 = 7 × ( × 4)
20. 1 10 = 0.
=
Week 28
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WEDNESDAY
THURSDAY
Week 28
1. What is the time?
2. 430 – 80 =
3. 2.2 + 0.8 =
4. 8 + 9 + 6 =
minutes past
5. What is the date a week
before the 5th of April?
6. 2.3 – 0.5 =
+ + +
7. 4 664 = 4 400 + 200 + 40 + 24
=
8. The cross-section made after the
cut will show what 2-D shape?
9. Draw lines to match the equivalent fractions.
1 1 3
0 4 2 4 1
6
8
10. 60 + 90 + 50 =
11. 1 hour 40 min. add 5 hours 45 min.
= hour(s) minute(s)
12. 7,080 m = m
13. 68 + 32 =
14. 2.4 km = m
15. 5 km 60 m = . km
16. John is 1 m 14 cm tall. Robert is 121 cm tall.
What is their combined height?
cm
17. 3,975 + = 4,000
18. What is this 2-D shape called?
19. 0.5 × 5 =
2
8
20. What is the perimeter of a
regular hexagon with 10-cm sides?
9
10
8
11
7
4
8
12
6
1
5
2
4
3
cm
1. What is the time?
past
2. How many minutes difference?
11:40 A.M. 12:25 P.M.
3. 4 + 7 + 8 =
+ +
4. 5 260 = 5 200 + 50 + 10 =
5. What length is 1 4 of a 100-m pool?
6.
m
3 0 2
× 2
7. 320 – 90 =
8. (8 × 5) × 2 = 8 × ( × 2)
9. 48, 42, 36, 30,
10. 6 × 7 =
11. 2.2 – 0.8 =
12. 4 × 9 =
13. What irregular 2-D shape is this?
14. Tick which is more likely to happen today.
You will get homework.
You will not get homework.
Review sample
15. 4,000 – 40 =
16. What is the number after 9,899?
17. 0.4 + 0.9 =
18. What is the area of a grid 7 cm by 4 cm?
19. Halve 70.
cm 2
20. 4,925 + = 5,000
11
10
9
8
7
12
6
1
2
3
4
5
84 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. The chance of the spinner
landing on a solution
of 7 is
in .
2. The chance of the spinner
landing on a division operation is
in .
Tuesday
A B C
1. Which tetromino has 2 lines of symmetry?
2. Which has no line of symmetry?
Wednesday
1. A florist arranged 2 roses for every 3 tulips
in a vase of 20 flowers. How many roses
were there?
2. How many triangles
can you find?
C
Thursday
25 ÷ 5 14 ÷ 2
5 + 2 21 ÷ 3
1. Liam put his chair in the
obtuse angle corner. It is in corner .
2. Finn put his chair in the
acute angle corner. It is in corner .
1. 11:36
2. 32
100 = 0.
3. 6 + 3 + 9 =
minutes to
4. Which is nearer to
2,000?
1,925 2,025
5. How many minutes
difference?
8:30 P.M.
9:30 P.M.
6. 999 + 8 =
7. 2,000 – 7 =
8. 7,400 m
= m
9. 11 × 4 =
10. 25, 75, 125, 175,
11. 8.9 m = cm
12.
1
2 = 6
13. 6 × 9 =
14. What 2-D shape will
you see in the crosssection?
15. 3.3 – 0.9 =
16. €13.75 + €5.25 =
17.
€
4 0 3
× 2
18. 41 + 39 =
19. Write the numeral nine
thousand, nine hundred
and eleven.
20. Halve 90.
21. The line of symmetry is
horizontal.
vertical.
diagonal.
22. Colour 700 m .
500 m
23. 3 km 100 m =
Review sample
B
A
m
24. Bob is 1 m 20 cm tall.
Sara is 124 cm tall.
What is their combined
height?
cm
25. 2,975 + = 3,000
Week 28
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MONDAY
TUESDAY
Week 29
1. What is the time?
to
2. €20.00 – €16.30 = €
3. 6 km 100 m = . km
4. Sum of 4 and 7 =
5. 6,050 m = m
6. Which is nearer to 7,000?
7. 0.8 = 10
6,550 7,395
8. 2.3 – 0.6 =
9. Complete the pattern.
c b a, a b c, c b , b c
10. Halve 300.
11.
1
2 = 4 = 6
12. 15 + 9 =
13. This triangle is an
triangle.
14. What is its perimeter? cm
15. 7,099 < 7,101 True False
16.
3 0 1
× 3
17. What 2-D shape will be
seen after the cut?
11
10
9
8
7
7 cm
12
6
10 cm
1
2
3
4
5
7 cm
1. What is the time?
past
2. 5 km 3 m = . km
3. 11 + 11 + 11 = × 11 =
4. 100 , 500 , 1,000 , 1,600 ,
5. 50 + 90 =
6. 505 – 8 =
7. 6 9 = 3
8. This is a net of a
9. (5 × 4) × 3 = 5 × ( × 3)
10. 5 dogs have 3 bones each. How many bones
altogether? Complete the number sentence.
11. The line of symmetry is
horizontal.
vertical.
diagonal.
12. Do semicircles tessellate?
13. How many fifths in 3 wholes?
14. If you cycle your bike 17 km of a 40-km race, how
far have you still to go?
Review sample
km
15. 3 hours 15 min. add 4 hours 50 min.
= hour(s) minute(s)
16. What is the area of a grid 15 m by 10 m?
.
=
11
10
9
8
7
12
6
1
2
3
4
5
18. 2 hours 35 min. add 1 hour 55 min.
= hour(s) minute(s)
19. Write the lowest number possible
using the digits 7, 5, 6 and 0.
20. It is 5.30 p.m. In 2 1 2 hours, the time will be
p.m.
17. 6 × 8 =
18. 38 + 52 =
19. 100 – 4 =
m 2
20. Write the largest number possible
using the digits 9, 8, 0 and 3.
86 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. What is the time?
2. 5 × 11 =
3.
2 0 1
× 4
4. 90 + 9 + 6 =
5. 40 × 5 =
6. 3
10 = 0.
minutes to
7. What is 3 5 of 500 metres? m
8. One parcel weighs 4.2 kg. Another weighs 5.6 kg.
What is the difference?
kg
9. 9,996 , 9,997 , 9,998 ,
10. This net is of a
11. 21 – 4 =
12. What 2-D shape will be
seen after the cut?
13. 60 – 5 – 8 =
14. How many angles has a pentagon?
15. 0.8 > 1.0 True False
16. Which measurement would you use to measure
milk for a cake recipe?
m kg cm m
17. 9,099 m = m
18. 4,000 – 10 =
19. 123 + 9 =
20. 4 km 25 m = . km
9
.
10
8
11
7
12
6
1
5
2
4
3
1. What is the time?
minutes past
2. How many tens in 400?
3. 1 5 > 1 3 True False
4. Write the numeral
seven thousand, one hundred and one.
5. 60 + 50 =
6. 25 cm = 1 4 m = 0. m
7. Halve 700.
8. , 9.9, 9.8, 9.7
9.
3 1 2
× 3
10. This shape is an irregular .
11. 5 × 27 × 2 =
12. 140 – 90 =
13. How many right angles has a rhombus?
14. What is the value of the 3 in 6.32?
15. 8 + 8 + 8 + 8 =
Bus
Timetable
16. How many buses run to Elmlow each day?
17. What time is the first bus from Ashton?
18. How long does the bus
from Pineland to Hazelworth take?
19. At what time does the
last bus reach Elmlow?
Bus 1 Bus 2 Bus 3
Oakby 8.30 a.m. 1.00 p.m. 6.15 p.m.
Ashton 8.50 a.m. 1.20 p.m. 6.35 p.m.
Pineland 9.05 a.m. 1.35 p.m. 6.50 p.m.
Review sample
Hazelworth 9.35 a.m. 2.05 p.m. 7.20 p.m.
Elmlow 9.50 a.m. 2.20 p.m. 7.35 p.m.
20. You need to be in Pineland
by 2 p.m. Which bus do you take?
9
10
8
11
7
12
6
1
5
2
4
3
Week 29
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 87

PROBLEM-SOLVING
FRIDAY REVIEW
Week 29
Monday
1. Evan has seven 20c coins in one hand and
three 50c coins in the other. The total is
€ .
2. Lily ran 3 laps of a 400-m track. The total
distance was
m.
= km m
= . km
Tuesday
1. Seán ran 4 laps of a -m track. He
ran 2,000 m, or 2 km, in total.
2. Dan owns a bus company. Each bus seats
20 people. A school needed buses for 70
people. How many buses did Dan send?
buses
Wednesday
Make the numbers across and down total 15.
1. Use 10, 7, 5 and 3.
2. Use 4, 9, 5 and 6.
1.
2.
Thursday
Complete the patterns.
1. What is the time?
2. 3 × 8 =
3. 6 km 50 m
minutes to
= . km
4. 405 – 9 =
5. 6 10 = 0.
6. 2.2 + 0.8 =
7. Halve 500.
8. 3 hours 35 min. add 2
hours 25 min.
= hour(s)
9. (5 × 4) × 6
minute(s)
= 5 × ( × 6)
10. This is a net for a
11. 4 520 =
12. How much will you pay
for 10 kg of potatoes at
€1.10 per 2 kg?
€
9
10
8
11
7
12
6
13. 120 – 80 =
1
5
2
4
3
.
14. 7 dogs have 3 bones
each. How many bones
altogether? Complete
the number sentence.
=
15. Which number is nearer
to 1,000?
960 1,030
2
16.
3 = 9
17. What type of triangle?
18. Write the numeral two
thousand one hundred.
19.
20. How many right angles
has a parallelogram?
21. 48 + 52 =
22. 8,997 , 8,998 , 8,999 ,
23. What 2-D shape will be
seen after the cut?
24.
11 cm
15 cm
2 0 1
× 3
Review sample
1
4 of 600 =
4 cm
25. Write the largest number
possible using the digits
7, 6, 8 and 1.
88 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. 8 weeks and 2 days = days
2. 16 + 7 =
3. (5 × 10) × 3 = 5 × ( × 3)
4. What length is 6 10 of 1 km? m
5. 4 km 70 m = . km
6. 4 hours 40 min. add 2 hours 25 min.
= hour(s) minute(s)
7. Tim has 28 balloons and ties them in groups of 7.
Write the answer as a number sentence.
8. What is the value of the 7 in 7,000?
9. Draw a reflection of:
10. Round 7,500 to the nearest thousand.
11. 1 2 > 1
20 True False
12.
4 3 4
× 2
13. What 2-D shape has 4 lines of symmetry?
14. 0.7 > 1 True False
15. 5 × 9 =
16. 6 840 =
17. A pentagon has
parallel lines.
18. €20.00 – €10.10 = €
=
non-parallel lines.
19. Write the numeral nine thousand two hundred.
20. The outcome of a coin toss is either
or .
1. 72 days = weeks and days
2. What 3-D shape has 6 square faces, 12 edges
and 8 vertices?
3. 230 + 80 =
4. 7 10 = 0.
5. Write 2.45 in expanded form.
6. 0.8 × 4 =
7.
3 0 2
× 3
+ 0. + 0.
8. 5 km 180 m = . km
9. An obtuse angle is greater than a right angle.
True
False
10. What is the value of the 6 in 6,000?
11. 1.1 > 0.9 True False
12. Is a light bulb symmetrical?
13. Double 19.
14. How many triangles
can you find?
Review sample
15. What 2-D shape will
be seen after the cut?
16. 90 + 80 =
17. 2,000 – 150 =
18. 1 4 of 60 =
19. 6,040 m = m
20. Product of 6 and 8 =
Week 30
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 89

WEDNESDAY
THURSDAY
Week 30
11
10
12
9
3
1. =
2.
8
7
6
1
3. 17 – 9 =
2
4
5
2 0 1
× 4
4. The line of symmetry is
horizontal.
vertical.
diagonal.
5. 12 × 3 =
6. 2,500 m = m
7. 9 × 0.3 =
8. What shape?
3
9.
6 = 2
10. It is the 30th of May. Tick which is less likely to
happen.
It will snow today.
11. 0.6 + 0.7 =
12. Write 5.17 in expanded form.
:
+ 0. + 0.
It will rain today.
13. What is the date 6 days before the 5th of October?
14. 8 + 8 + 7 =
15. Double 49.
16. What length is 1 4 of 200 metres? m
17. 500 , 2,000 , 3,500 , , 6,500
18. (40 ÷ 4) × (60 ÷ 5) =
19. Halve 150.
20. Ethan wrote the date of 4/9. What month was it?
11
10
12
9
3
1. =
8
7
6
1
2
4
5
2. (2 × 4) × 6 = 2 × ( × 6)
3. 101 – 7 =
4. How many tenths in 5 wholes?
5. What length is 2 5 of 5,000 metres?
m
6. 7 km 3 m = . km
3
7.
4 = 8
8. 5 × 4 × 2 =
9. 250 m = 0. = 1 4
10. A rhombus has
parallel lines.
non-parallel lines.
11. 260 + 80 =
12. How many minutes difference?
:
8:35 A.M. 9:10 A.M.
13. 40 + 90 =
14. Halve 1 2 .
15. 19.7, 19.8, 19.9,
16. This 2-D shape is an irregular
Review sample
17. 0.17 = tenth(s) hundredth(s)
18. Double 59.
19. 25, 50, 75, , 125,
20.
2
4 = 8
.
90 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Follow the pattern to complete the table.
Books read 2 4 6 8 10
Time taken (days) 4 8 12
2. How many 10-cm rods will
be needed to measure 240 cm?
Tuesday
Total laps of the
running track
Conor 3 6 9
Liam 4 8 16
1. Follow the patterns to complete the table.
2. How many 10-cm rods will
be needed to measure 1,250 cm?
Wednesday
This pie chart shows 4th Class' after-school
activities.
1. What fraction has
dance after school?
2. What fraction has
martial arts after
school?
Thursday
1. Complete the pattern.
2. What volume is needed
to fill this jug to 2 litres?
litres
1. 9 weeks and 4 days =
2. 203 – 7 =
days
3. How many sixths in 5
wholes?
4. 5 × 3 × 2 =
2
7.
6 = 3
8. Write 2.53 in expanded
form.
9. 0.9 + 0.2 =
+ 0. + 0.
10. €20.00 – €10.30 =
€
11. What length is 3 10 of
1 kilometre?
12. 9 × 0.5 =
m
13. Double 59.
14. An octagon has
15. 0.8 × 4 =
parallel lines.
non-parallel lines.
16. 4 km 60 m =
17. 6 444 =
. km
18. 4 hours 25 min. add 2
hours 45 min.
= hour(s)
minute(s)
19. Complete the pattern.
5. 4 3 4
× 2 line of symmetry
20. Write the largest
6. 0.36 = tenths
number possible using
the digits 7, 8, 4 and 0.
+ hundredths
21. What 2-D
shape will be
seen after the cut?
22. Round 6,901 to the
nearest thousand.
23. Share 90c equally
among 9 people. How
much each? Complete
the number sentence.
c
= c
Review sample
2
1
24. How many minutes
difference?
c
3:35 A.M.
4:20 A.M.
25. Henry opened a new
litre carton of milk.
He used 750 m . How
much milk was left?
m
Week 30
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 91

MONDAY
TUESDAY
Week 31
1. Write the digital time for 16 minutes to 8.
2. Julie is 1 m 29 cm tall. Joe is 124 cm tall.
How much taller is Julie?
cm
3. Write as a decimal.
2 km 500 m = 2. km
4. 60 – 35 =
5. 17 + 13 =
6. 100 ÷ 100 =
7.
2
3 = 6 = 9
8. 0.9 + 0.1 =
9. If you stack a number of rectangles together,
what 3-D shape will be made?
10. 600 + 800 =
11. Cost of 200 g of chocolate at €20.00 per kg?
€
12. How many zeros in one thousand?
13. Is a spoon symmetrical?
14. 1 4 of 600 =
15. 3 hours 30 min. subtract 1 hour 15 min.
= hour(s) minute(s)
16. 5 × 82 × 2 =
17. 8 + 7 + 9 =
18. 105 – 15 =
19. 0.7 = 10
1. Write the digital time for 8 minutes past 2.
2. Round 2,483 to the nearest thousand.
3. 7,000 + 2,000 =
4. 0.8 + 0.3 =
5. 300 ÷ 100 =
6. 14 + 16 =
7. 70 – 45 =
8. Write as a fraction.
250 m =
9. Write 0.72 as a fraction.
10. Draw a reflection of:
11. 5.05 + 2.94 =
12. 0.8 × 7 =
13. What irregular 2-D shape?
14. On this bus timetable,
what is the time interval
between each bus?
15. 205 – 15 =
minutes
16. 8, 16, , 32
17. Write 5 km 200 m as a decimal.
. km
DEPARTURES
7.03 a.m.
7.11 a.m.
7.19 a.m.
7.27 a.m.
Review sample
18. Does a rhombus have parallel lines?
20. 0.3 > 1 True False
19. Cost of 200 g of cheese at €10.00 per kg?
€
20. 140 + 160 =
92 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. Write the digital time for 21 minutes to 10.
2. 3 hours 45 min. subtract 2 hours 15 min.
= hour(s) minute(s)
3. 0.2 × 6 =
4. 8,000 + 1,000 =
5. If you stack a number of circles together, what
3-D shape will be made?
6. 80 – 55 =
7. 18 + 12 =
8. Draw a reflection of:
9. 500 ÷ 100 =
10. How many digits make up
the numeral two thousand?
11. On this bus timetable,
what is the time interval
between each bus?
12. 405 – 15 =
13. 0.7 + 0.6 =
minutes
14. Mark is 125 cm tall. Linda is 1 m 23 cm tall.
What is their combined height?
cm
15. How many angles has a pentagon?
Write the chance of selecting the following
coloured marbles from the bag.
16. red = in
17. blue = in
18. Which colour has the best
chance of being chosen?
19. Which colour has the second
best chance of being chosen?
20. Which colour has the least
chance of being chosen?
DEPARTURES
7.09 a.m.
7.24 a.m.
7.39 a.m.
7.54 a.m.
1. Write the digital time for 24 minutes past 5.
2. 19 + 11 =
3. If you stack a number of triangles together, what
3-D shape will be made?
4. 0.1 × 9 =
5. What is the perimeter of a rectangle 10 cm by
15 cm?
cm
6. 1,000 ÷ 10 =
7. Write as a fraction. 500 m =
8. 90 – 65 =
9. 100 × 38 =
10. 40 × 5 =
11. How many digits make up the numeral five
thousand, nine hundred and eighteen?
12. 3,000 + 5,000 =
13. 1 – 0.3 =
14. Which type of symmetry does the letter ‘A’ have?
vertical
horizontal
15. 5, 20, 35, , 65
16. Write as a decimal.
Review sample
4 km 250 m = . km
17. 0.5 + 2.5 =
18. Circle the oblique line.
19. 505 – 15 =
20. Colour an arrow to show where the balance
scales will tip.
A
1
kg
500 g
250 g
B
Week 31
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 93

PROBLEM-SOLVING
FRIDAY REVIEW
Week 31
Monday
1. Pair the parallel sides.
and
and
and
2. Draw the 4 diagonal lines within the
hexagon.
Tuesday
1. Extend each side of this regular pentagon
to test if any sides are parallel. What have
you discovered?
2. Draw the diagonal lines on the pentagon.
How many are there?
A
Wednesday
1. Which spinner is more
likely to land on an odd number?
B
2. Which spinner will never
land on a number > 8?
Thursday
1. A road crew charges 50c per metre for
painting a white line. How much would it
cost to paint a kilometre?
€
5 3
8 10
2. The 5 angles in a regular pentagon are
acute. obtuse. right.
D
F
E
E
3 5
1 4
C
A
D
A
B
B
C
1. Write the digital time
for 18 minutes to 11.
2. 17 + 13 =
3. 0.3 × 9 =
4. 90 – 65 =
5. Round 6,572 to the
nearest thousand.
6. 0.8 + 0.5 =
7. Sandy is 1.34 m tall.
Bob is 1.23 m tall. How
much shorter is Bob?
cm
8. 6,000 + 3,000 =
9. 1,100 ÷ 100 =
10. Write as a decimal.
3 km 400 m =
. km
11. Is a fork symmetrical?
12. 2 hours 45 min.
subtract 1 hour 30 min.
= hour(s)
minute(s)
13. 5.25 + 2.53 =
14. 0.4 + 2.6 =
15. Which letter has a
vertical line of symmetry?
C D A
16. Colour an arrow
to show where the
balance scales will tip.
= 1 kg = 800 g = 300 g
17. Write as a fraction.
750 m =
2
18.
3 = 9
19. Here is a bus timetable.
DEPARTURES
8.07 a.m.
8.22 a.m.
8.37 a.m.
8.52 a.m.
What is the time
interval between each
bus?
20. 505 – 15 =
minutes
21. Draw a reflection of:
22. What is the cost of
200 g of marshmallows
at €5.00 per kg?
Review sample
A
€
23. 5 × 76 × 2 =
24. 3, 18, 33, , 63
25. What is the perimeter
of a rectangle 9 m by
7 m?
m
B
94 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Write the digital time for 27 minutes to 12.
2. 21.3 = 20 + 1 +
3. What 3-D shape will you make if you stack
squares together so its height is the same as its
width?
4. €20.00 – €11.50 = €
5. 1.1 × 3 =
6. 4.20 + 3.55 =
7. Round 5,960 to the nearest thousand.
8. 400 – 11 =
9. Beth weighs 30.2 kg. Daniel weighs 35.8 kg.
How much lighter is Beth?
kg
10. Share €20.00 equally among 8 people.
€ each
11. Write as a decimal.
2 km 250 m = . km
12. 0.3 + 0.7 =
13. Circle the perpendicular line.
14. 700 + 600 =
15. 20 × 28 × 5 =
16. 6 × 300 =
17. 1,025c = €
18. Which type of symmetry does this letter have?
vertical
horizontal
19. 0.7 < 1 True False
20. 48 + 62 =
B
1. Which is nearer to 2,000?
2,690 3,299
2. Write as a fraction.
750 m =
3. 9 × 4 =
4. 20 × 11 × 5 =
5. €20.00 – €14.40 = €
6. 32.45 = 30 + 2 + +
7. 1.1 × 5 =
12
11
10
8. 10:25 = 9
8
9. What is the time interval
between bus departures?
minutes
10. Draw an irregular pentagon.
11. 900 + 800 =
12. 1 4 kg = g
13. Write 0.11 as a fraction.
7
6
1
2
3
4
5
14. If you buy 4 bread rolls at 35c each, what change
do you receive from €2.00?
€
15. 5 = 1 2 of
16. 6,000 + 400 + 20 + 9 =
17. 7 × 400 = 4 ×
18. 5 95 =
19. 300 – 12 =
20. (9 × 5) ÷ (9 × 1) =
DEPARTURES
9.03 a.m.
9.28 a.m.
9.53 a.m.
Review sample
Week 32
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 95

WEDNESDAY
THURSDAY
Week 32
1. Write the digital time for 11 minutes to 6.
2. 75 + 25 =
3. 4 × 8 =
4. 8 × 1.1 =
5. Write as a fraction.
800 m =
6. 70 + 3 + 0.2 + 0.05 =
7. Share €100.00 equally among 5 people.
€ each
8. Roll a dice. Chance of it landing on a 4?
in
9. 400 + 800 =
10. 9 × 8 =
11. 4 31 = r
12. 12 = 1 3 of
13. How many sixths in 3 wholes?
14. Write as a decimal.
3 km 800 m = . km
15. (65 + 15) – (40 ÷ 8) =
16. 8,000 + 500 + 20 + 3 =
17. 80 min. = hour(s) minute(s)
18. 300 – 15 =
19. 5 145 =
20. Which type of symmetry does this letter have?
vertical
horizontal
C
1. Write the digital time for 8 minutes past 8.
2. What is the time interval
between bus departures?
minutes
3. Two boys were weighed.
Dan
Stan
Total
31.2 kg
38.7 kg
kg
4. Circle the oblique line.
5. 9 × 1.1 =
6. 1,550c = €
7. 600 + 700 =
8. 7, 15, 24, 34,
9. 7 × 700 =
10. Draw a rhombus.
Choose the dots to
aid your drawing.
11. 6 × 3 = × 6
12. 40 + 2 + 0.9 + 0.06 =
13. 3,000 – 30 =
14. 95 min. = hour(s) minute(s)
15. 700 – 15 =
16. 2.50 + 3.25 =
17. Which type of symmetry does this letter have?
vertical
horizontal
18. 3 = 1 4 of
19. 88 ÷ 8 = (80 ÷ 8) + ( ÷ )
=
M
DEPARTURES
7.06 a.m.
7.26 a.m.
7.46 a.m.
8.06 a.m.
Review sample
20. Colour an arrow to show where the balance scales
will tip.
1.2
500 g
kg
800 g
A
B
96 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Liam has 4 times more money than Ava has.
Liam has €40. How much does Ava have?
€
2. Conor ate 3 times the amount of chocolate
pieces that Anna ate. Conor ate 12 pieces.
How many did Anna eat?
pieces
Tuesday
1. A library packed 9,000 books into boxes of
10. The books were stored while the library
was repainted. How many boxes were
there?
boxes
2. After painting, the librarian reshelved 874
boxes. How many books were reshelved?
books
Wednesday
1. How many of the library’s boxes of books
have not been shelved?
2. A volunteer shelved the remaining
books.
Thursday
1. How many triangles
can you find?
A
1. Which is nearer to
2,000?
2,825 3,150
2. 20 × 17 × 5 =
3. 7 × 1.1 =
4. 3.15 + 4.40 =
5. Amy weighs 38.7 kg.
Bill weighs 34.2 kg.
How much lighter is Bill?
kg
6. 700 + 800 =
7. 8, 13, 19, 26, ,
43
8. Write as a decimal.
2,590 m =
9. 5 105 =
10. 0.3 < 1
True
. km
11. 400 – 15 =
False
12. (70 + 20) ÷ (100 ÷ 10)
=
13. 60 + 2 + 0.7 + 0.03 =
14. Circle the oblique line.
15. 1,005c = €
16. Draw an irregular
pentagon.
17. 4 × 700 =
18. €20.00 – €12.80
= €
19. Write as a fraction.
250 m =
20. 8:23
=
11
10
9
8
7
12
6
1
2
3
4
5
21. Draw a rhombus.
Choose the dots to aid
your drawing.
22. What 3-D shape will
you make if you stack
triangles?
23. If you bought 3 bread
rolls at 60c each, how
much change would
you get from €5.00?
Review sample
00:3050 00:2850
2. Which stopwatch is 1.5 seconds different
from A?
B
00:3200
C
€
24. Colour an arrow to show
where the balance scales
will tip.
A
B
= 1.3 kg = 1,500 g
25. Share €100.00 equally
among 8 people.
€ each
Week 32
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 97

MONDAY
TUESDAY
Week 33
1. Write 0.79 as a fraction.
2. 900 + 400 =
3. 3.45 + 2.03 =
4. 100 – 35 =
5. All numbers from 1,000 to 9,999 have
digits.
6. Write as a decimal.
1 km 750 m = . km
7. 0.8 × 3 =
8. 50
100 = 0.
9. Draw a reflection of:
10. What will be the time 12 minutes after 8.28 a.m.?
11. 900 × 10 =
12. 20 + 5 + 0.5 + 0.05 =
13. Roll a dice. The chance of it landing on an odd
number is
14. 1,050c = €
15. 400 – 17 =
in .
12
11
10
16. 3:08 = 9
8
7
17. Circle the perpendicular line.
18. 5 × 6 =
19. 0.3, 0.7, , 1.5, 1.9
6
1
2
3
4
5
20. How many sides has a rhombus?
1. 8 weeks = days
2. What time will the next bus
leave if the intervals are equal?
3. 4 × 5 =
4. 1,000 – 9 =
5. 0.1 = 10
6. 2.2 kg of flour, 3.5 kg of sugar and 2.1 kg of
cocoa powder.
7. 47
Total weight =
100 = 0.
8. Draw a reflection of:
9. This is a
bar graph.
line graph.
pictogram.
10. 800 × 10 =
11. 40 + 4 + 0.2 + 0.09 =
kg
12. What will be the time
18 minutes after 10.32 p.m.?
13. 600 – 17 =
14. Which type of symmetry does this letter have?
vertical
horizontal
15. What is the cost of buying
10 kg of prawns at €20.00 per kg? €
16. 5 × 0.8 =
17. Write as a fraction.
18.
600 m =
3
4 = 8
19. 7 + 4 + 9 =
E
Profit
Sales
Months
DEPARTURES
9.05 a.m.
9.20 a.m.
9.35 a.m.
Review sample
20. 115 min. = hour(s) minute(s)
98 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. 1 4 = m
2. 9 × 0.3 =
3. 4.59 + 2.31 =
4. Write as a decimal.
3 km 600 m = . km
5. 800 + 700 =
6. Write 0.38 as a fraction.
7. 900 – 17 =
8. Draw two lines of symmetry.
H
9. 600 × 10 =
10. 48 + 42 =
11. What will the time be 16 minutes after 2.19 a.m.?
12. 50 + 9 + 0.9 + 0.09 =
13. Write as a fraction.
750 m =
14. 1,759c = €
4
15.
5 = 10
16. Which sides are not parallel?
E and A
E and B
F and C
19. 135 min. = hour(s) minute(s)
20. 4 + 4 + 4 + 4 =
F
E
1. Which clock matches the digital clock?
2. 400 – 13 =
3. 20 × 75 × 5 =
A
4. Which type of symmetry does this letter have?
5. 80
vertical
horizontal
100 = 0.
6. 700 × 10 =
7. What is the area of a
rectangle 6 cm by 8 cm? cm 2
8. 1.1 × 7 =
9. Expand 2.96.
+ +
10. Draw a reflection of:
11. 100 + 20 + 5 + 0.5 + 0.01 =
12. What is the number before 8,000?
13. 3.92 + 2.34 =
14. 85 + 25 =
15. 20, 35, 50, 65,
16. What is the missing
measurement?
D
m
17. 0.5 = 100
17. 100 – 45 =
18. Colour an arrow to show where the balance scales
1
will tip.
18. 4 kg = g
A
A
B
C
01:01
19. This is an
equilateral triangle.
isosceles triangle.
20. 200 ÷ 5 =
11
10
9
8
7
12
6
Y
Review sample
B
1.5 kg
2,000 g
1
2
3
4
5
1,500 m
1
? m
B
11
10
9
8
7
12
6
1
2
3
4
5
Week 33
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 99

PROBLEM-SOLVING
FRIDAY REVIEW
Week 33
Monday
1. A chef purchased 12 blocks of cheese at €5
each. How much did he spend altogether?
€
2. A chef peeled 5 boxes of 30 bananas in
5 hours. How many bananas were peeled?
bananas
Tuesday
1. A school library needs to pack 5,000 books
into boxes of 100. It takes 1 minute to pack
each box. How many minutes will it take to
pack all the books?
minutes
2. A fast train takes an hour to travel 300 km.
How far can it travel in 2 1 2 hours?
A
km
Wednesday
00:2075 00:2930
1. Which watches are 00.0100 apart?
and
B
00:3030
2. Orla spent 1 4 of her money on a T-shirt and
3
8 on a jumper. What fraction of her money
had she left?
Thursday
1. How many grams per packet? g
2. Ethan ate 1 4 of the packets. How many
grams did he consume?
g
C
1. Write 0.43 as a fraction.
2. 300 – 17 =
3. 800 + 600 =
4. 4.55 + 2.02 =
5. What will the time be 7
minutes after 3.33 p.m.?
6. What is the cost of
buying 100 kg of fish at
€12.00 per kg?
€
7. 1.1 × 8 =
8. 8 × 0.3 =
9. Write as a decimal.
2 km 250 m =
. km
10. Draw a reflection of:
11. 5 600 =
12. The chance of picking a
yellow marble is
in .
13. The chance of picking a
blue marble is
in .
14. Which type of symmetry
does this letter have?
vertical
horizontal
15. 50 + 8 + 0.9 + 0.03 =
16. 0.4, 0.9,1.5, 2.2,
, 3.9
17. Colour an arrow to show
where the balance scales
will tip.
18. Roll a dice. The chance
of it landing on an even
number is
in .
19. How many triangles can
you find?
20. 700 × 10 =
21. 800 × 10 =
22. What time will the next
bus leave if the intervals
remain equal?
a.m.
23. 20, 45, 70, , 120
24. Circle the perpendicular
line.
25.
W
= 1.3 kg = 1,500 g
Review sample
GINGER
20 packets
1 kg in total
A
DEPARTURES
9.05 a.m.
9.20 a.m.
9.35 a.m.
B
1
4 = m
100 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Which angle is obtuse?
A
2. Write the numeral
five thousand and twenty-five.
3. What is the date two days before the 2nd of July?
4. Double 45.
5. If in 25 minutes the time will be 8.35 p.m., what
is the time now?
6. 4.25 + 3.51 =
7. 900 – 450 =
8. 6 = 1 3 of
9. 5,000 + 400 + 30 + 2 =
10. The capacity is 2 . The markings are equal to
2 L
100 m .
1
4 .
1
2 .
11. 3, 23, 43, 63,
12. Round 7,500 to the nearest thousand.
13. What type of triangle?
14. 6 × 0 =
15. 50 + 0.05 + 4 + 0.2 =
16. 8.3 + 0.8 =
17. What 3-D shape is this?
18. What 2-D shape will you see
in the cross-section?
19. 2 = 1
10 of
20. 0.2 × 5 =
B
3 cm
12 cm
8 cm
1. Write the digital time for 3 minutes past 10.
2. Write the lowest number possible using the digits
6, 4, 9 and 0.
3. What is the date 5 days before the 6th of
November?
4. 500 – 350 =
5. 3 × 9 =
6. How many quarters in two wholes?
7. 90 cm = 0. m
8. 4 × 6 =
9. 5.75 – 2.50 =
10. 5 = 1 4 of
11. 60 + 0.03 + 0.9 + 2 =
12. 1,000 – 11 =
13. What 2-D shape will you see in the cross-section?
Review sample
14. 1.1 × 5 =
15. 1 4 kg = g
16. How many tens go into 450?
17. 7,000 + 20 + 5 =
18. 9.2 + 0.9 =
19. Write 8 tenths as a decimal.
20. 2 , 10 , 50 , , 1,250
Week 34
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 101

WEDNESDAY
THURSDAY
Week 34
1. Write the digital time for 3 minutes past 10.
2. How many metres have you
swum in 20 laps of a 50-m pool?
3. 800 – 250 =
4. What is the date a fortnight after the 16th of April?
5. 16 – 9 =
6. 9,000 + 200 + 4 =
7. Double 900.
8. 6.95 – 2.25 =
9. 0.9 + 10 + 0.03 =
10. Draw an octagon.
11. Halve 1 3 .
12. What type of triangle?
13. Write as a fraction.
600 m =
14. 0.8 < 1 True False
15. 4.3 + 0.8 =
16. What time is the
second train from Big Hill?
17. You need to be in Upton
for half past four.
What time do you leave Padfoot?
18. What time is the last train from Freley?
19. How long does it take to
get from Big Hill to Upton?
5 cm
20. How long is the entire train journey?
5 cm
Train Timetable
Padfoot 7.30 a.m. 11.00 a.m. 3.15 p.m. 7.45 p.m.
Big Hill 7.55 a.m. 11.25 a.m. 3.40 p.m. 8.10 p.m.
Upton 8.15 a.m. 11.45 a.m. 4.00 p.m. 8.30 p.m.
Freley 8.35 a.m. 12.05 p.m. 4.20 p.m. 8.50 p.m.
Marlin 9.00 a.m. 12.30 p.m. 4.45 p.m. 9.15 p.m.
5 cm
1. Which line is perpendicular to Y?
Y
2. (25 ÷ 5) × (30 ÷ 6) =
3. What type of triangle?
4. 700 ÷ 10 =
5. What is the date a week before the 12th of
October?
6.
3
6 = 2
7. Halve 1,500.
8. 8 + 0.8 + 0.05 =
9. 1.5 km = m
10. Tick the pentagon that has all obtuse angles.
A
11. 0.8 + 0.7 =
12. Halve 1 4 .
13. 900 – 350 =
14. 8 × 4 = 16 ×
15. How many metres have you swum (50-m pool) in
40 laps?
m
16. 100 – 35 =
17. Parallelogram = sides
18. 12 – 8 =
19. 47 + 53 =
20. €13.50 + €9.50 = €
B
7 cm
10 cm
Review sample
A
Y
B
7 cm
102 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. How many triangles
can you find?
2. Eli has 36 books. Mia has one quarter this
number of books. How many books does
Mia have?
1. Write the digital time
for 6 minutes past 6.
2. 3.45 + 2.04 =
3. 100 – 55 =
4. 7,000 + 100 + 3 =
18. Halve 1 4 .
19. Mary swam 2,000 m
in a 50-m pool. How
many laps did she do?
20. 50 + 0.03 + 0.9 + 5 =
Week 34
Tuesday
1. A chef baked 3 shape biscuits. They had
10 corners in total. What 2-D shapes could
there have been?
, and
2. A chef baked another 3 shape biscuits. They
had 13 corners in total. What 2-D shapes
could there have been?
, and
Wednesday
1. Continue the pattern of the cubes.
2. A class lined up 25 glue sticks end to end.
What was the length?
cm
Thursday
A recipe needs 1 1 2 cups of flour for every
1
4 cup of sugar. A chef tripled the recipe.
1. What amount of flour did the chef use?
cup(s)
2. What amount of sugar did the chef use?
cup(s)
5. Draw a parallelogram.
6. (30 ÷ 10) × (42 ÷ 6) =
7. Write seven tenths as a
decimal.
8. Julia has 42 books.
Meg has one third the
number of books that
Julia has. How many
books does Meg have?
9. What is the date a
fortnight from the
17th of July?
10. 15 – 6 =
11. 15 = 3 4 of
12. Double 700.
13. 6 × 8 =
14. 6 × 10 = 3 ×
15.
1
4 kg = g
16. 900 – 250 =
17. 6.75 – 2.40 =
21. What 2-D shape will
you see in the crosssection?
22. €15.50 + €8.50 =
€
23. 0.2 × 5 =
24. 7 × 0 =
25. Halve 900.
Review sample
12 13 14 15 16 17 18 19 20 21 22
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 103

MONDAY
TUESDAY
Week 35
1. 1 4 kg = g
2. Double 0.9.
3. 6.95 – 2.40 =
4. 9.7, 9.8, 9.9,
5. 8,000 + 600 + 55 =
6. 7, 11, 16, 22,
7. Write as a decimal.
200 m = 0.
8. 8.8 + 0.9 =
9. This is a
10. 0.3 × 5 =
11. 60 + 0.05 + 0.4 + 5 =
12. 50 cm = 0. m
13. What is the cost of 2 kg of strawberries at €6.50
per kilogram?
€
14. 0.2 < 1 True False
15. Can a cylinder roll in a straight line?
16. Can a cone roll in a straight line?
17. 9 = 1 4 of
18. (17 – 8) + (14 – 9) =
19. 4 × 9 =
20. Write the highest number possible using the digits
8, 1, 2 and 5.
.
1. Which is ‘cm 2 ’?
square metre
2. 3.7 + 0.4 =
3. 2,000 + 750 + 8 =
4. 3 + < 8
square centimetre
5. Write seventeen hundredths as a decimal.
6. 9 + 0.2 + 0.08 =
20. 0.3 = 10
A
7. Which sides are parallel?
A and C
B and E
F
E
B
C
D and E
D
8. How many angles in a parallelogram?
9. This 2-D shape is a
.
10. The chance of the spinner
1
landing on an odd number is 2 3
in .
5
11. How many minutes difference
from 8.04 a.m. to 8.27 a.m.? minutes
12. Tick the number nearer to 5,000.
4,500 5,750
13. (6 + 4) × (4 × 3) =
14. Is this a right angle?
15. Write as a fraction. 25 cm = m
16. How many metres have you
swum (50-m pool) after 15 laps? m
17. Double 0.6.
18. 1 1 2 hours = hour(s) minute(s)
or minute(s)
19. €19.75 = c
Review sample
104 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. Which is ‘m 2 ’?
square millimetre
2. 500 – 23 =
3. 0.07 + 0.4 + 20 + 4 =
4. Write as a decimal.
600 m = 0.
5. Colour an arrow to show
where the scales will tip.
6. 3 × 6 =
square metre
7. Write twelve hundredths as a decimal.
8. 8 + > 12
9. 4,000 + 550 + 8 =
10. What is the chance of tossing a coin and losing
the toss?
in
11. 400 g = kg
12. This is an irregular
13. 7.75 – 1.50 =
14. 0.5 × 8 =
15. How many metres have you swum (50-m pool)
after 25 laps?
m
16. Which sides are parallel?
H and C
H and D
H and B
17. Halve 1.4.
18. Cost of buying 100 kg of lemons at €1.50 per kg?
€
19. 5
10 = 0.
20. In 7,400, what is the place value of the 7?
G
A
H
F
.
A
E
B
= 1.1 kg = 200 g = 500 g
1. 4 × 8 =
2. Write as a fraction.
75 cm = m
3. 2 1 4 hours = hour(s) minute(s)
or
4. 600 – 23 =
minute(s)
5. 0.5 + 0.05 + 80 + 9 =
6. 5 = 1 5 of
7. Write 0.39 as a fraction.
8. Write as a decimal.
800 m = 0.
9. 6,000 + 700 + 85 =
10. How many metres have you swum after 35 laps
(50-m pool)?
m
11. A wizard needs
100 m of celery juice
and 300 m of carrot juice.
Colour the level on the jug.
12. 0.3 × 9 =
13. 38 + 62 =
14. The angles in a regular octagon are
right.
obtuse.
acute.
Review sample
B
D
C
15. 4.7, 4.8, 4.9, , 5.1
16. 103 – 9 =
17. Halve 2.4.
18. 17 + 17 + 17 =
19. 5 165 =
20. Is this an obtuse angle?
500 m
Week 35
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 105

PROBLEM-SOLVING
FRIDAY REVIEW
Week 35
`
Monday
1. Alex practised his
guitar for 30 minutes,
every weekend day
in March. How many
times did he practise
in March?
times
2. How many hours and minutes of practice
did he do in March?
hour(s)
Tuesday
minute(s)
1. Philip made 8 litres of fruit juice. How many
1
2 -litre jugs can he fill?
jugs
2. A crate of 108 eggs arrives. The chef has
trays that hold 6 eggs. How many trays
does the chef need?
trays
Wednesday
1. A chef made 4 shape biscuits and counted
a total of 14 corners. What 2-D shapes
could there be?
, ,
and
2. Elaine said, 'Triangles can't
tessellate.' Do you agree?
Explain your answer.
MARCH
S M T W T F S
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
1. Write nineteen
hundredths as a
decimal.
2. 4.3 + 0.9 =
3. 700 – 23 =
4. 8.95 – 2.45 =
5. 6 × 9 =
6. Write as a decimal.
300 m = 0.
7. 0.03 + 8 + 0.2
=
8. 6,000 + 900 + 50 + 8
=
9. 40 cm = 0. m
10. 24 = 3 4 of
11. 2 + < 6
12. Double 0.8.
13. Which pentagon has at
least one right angle?
A
14. 900 m = 0.
B
15. Does a rhombus have
parallel lines?
18. Colour an arrow
to show where the
balance scales will tip.
19. 0.4 × 5 =
20. How many metres
would you have
swum after 25 laps
(50-m pool)?
m
21. Is this a right angle?
22. Write as a fraction.
75 cm = m
23. 2 1 4 hours =
or
A
= 300 g = 600 g = 1 kg
24. 6 10 = 0.
hour(s)
minute(s)
JULY
B
minute(s)
S M T W T F S
1 2 3
Review sample
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
Thursday
1. 200, 198, 194, 186, 170, , 74
2. 1 2 , 1, 2, 3 1 2 , 5 1 2 , 8, 11,
16. Tick the number nearer
to 3,000.
2,750 3,275
17. Abbreviate 'square
centimetre'.
25. Liam had 45-minute
piano lessons every
Monday and Friday in
July. How many hours
and minutes did he
spend in piano lessons?
hour(s)
minute(s)
106 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Abbreviate 'kilometre'.
2. Circle the larger number. 0.78 0.75
3. 4.4 ÷ 2 =
4. How many laps of a 25-m pool are needed for a
500-m swim?
5. Round 7,050 to the nearest hundred.
6. Round 7,050 to the nearest thousand.
7. 75 + 75 + 25 + 25 =
8. 4 × 8 =
9. Share €15.00 equally among 10 people.
€ each
10. 2 + < 5
11. Is this angle acute?
12. 800 – 220 =
13. 4 232 =
14. 1 4 of = 10
15. 1 3 4 hours = hour(s) minute(s)
or
minute(s)
TV Guide
News 6.00 a.m. Playtime 9.20 a.m. News 12.15 p.m.
GMTV 6.30 a.m. Doctor Dan 10.00 a.m. Soapwatch 12.45 p.m.
News 9.00 a.m. Film 10.45 a.m. Film 1.00 p.m.
16. How many times is the news on?
17. How long does the first film last for?
18. Is ‘Doctor Dan’ on for
longer than ‘Playtime’?
19. Which programme is on for the longest time?
20. Which programme is on for the shortest length of
time?
1. 1 4 km = m
2. Write as a decimal.
500 m =
3. Circle the smaller number. 0.04 0.4
4. How many laps are needed
for a 1,000-m swim (25-m pool)?
5. Round 3,909 to the nearest thousand.
6. How many tenths in three wholes?
7. 4 hours 35 min. subtract 2 hours 15 min.
= hour(s) minute(s)
8. 8.75 – 5.20 =
9. 1 3 of = 10
10. 600 – 35 =
11. Write as a fraction.
50 cm = m
12. What is the chance of you tossing a coin and it
landing on tails?
in
13. Cost of 100 kg of jelly beans at €2.50 per kg?
€
14. Complete the times
with 15-minute intervals.
15. 18 ÷ 6 =
16. Which type of symmetry does this letter have?
vertical
horizontal
17. Halve 1 2 .
18. Share €25.00 equally among 10 people.
€ each
19. 6 × 8 =
20. 4.2 – 0.4 =
DEPARTURES
8.03 a.m.
8.18 a.m.
Review sample
C
a.m.
a.m.
Week 36
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 107

WEDNESDAY
THURSDAY
Week 36
1.
11
10
9
8
7
12
6
1
2
3
4
5
2. 700 – 27 =
=
3. 9.85 – 7.24 =
4. Circle the larger number. 0.53 0.35
5. How many laps are needed
for a 1-km swim (25-m pool)?
6. 0.8 = m
7. Tick the number nearer to 7,000.
:
6,950 7,090
8. 0.2 > 1 True False
9. 0.4 + 0.04 + 40 + 4 =
10. 5 + > 9
11. Is this angle obtuse?
12. 1,000 + 100 + 80 =
13. 2 1 2 hours = hour(s) minute(s)
or
minute(s)
14. €10.50 = c
15. Write the numeral nine thousand, eight hundred
and seven.
16. Complete the times
with 14-minute intervals.
17. 3.2 – 0.5 =
18. Share €45.00 equally
among 10 people.
€ each
19. 7 × 9 =
20. 5 49 = r
DEPARTURES
7.07 a.m.
a.m.
a.m.
12
11
10
1. 9:45 =
2. 600 – 27 =
9
8
7
6
1
2
3
4
5
3. How many laps are needed for
a 1,500-m swim? (25-m pool)
4. How many angles in a hexagon?
5. 0.4 m = cm
6. Write as a decimal.
750 m =
7. 0.02 + 0.5 + 30 + 6 =
8. 5 hours 15 min. subtract 2 hours 30 min.
= hour(s) minute(s)
9. Circle the smaller number. 0008 0.8
10. Complete the times
with 12-minute intervals.
11. 17 + 9 =
12. 0.3 ÷ 2 =
13. Write as a fraction.
70 cm = m
14. 2.4 + 0.9 =
15. 9 × 8 =
16. €20.00 – €10.50 = €
17. 1,000 – 301 =
18. 6.1 – 0.8 =
J
19. Which month
was the hottest?
20. Which month
was the coldest?
DEPARTURES
11.09 a.m.
Review sample
°C
25
20
15
10
5
0
TEMPERATURE
F M A M J J A S O N D
a.m.
a.m.
a.m.
108 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Which letter has no
perpendicular lines?
2. Which letter has
2 oblique lines?
Tuesday
1. 100, 95, 85, 70, 50,
2. 100, 99, 97, 94, 90, , 79
Wednesday
1. Complete the symmetrical drawing. (Use a
ruler for accuracy.)
2. What is the length of the diagram?
mm
1. What is the weight
of one ginger
cupcake?
g
Thursday
2. How many boxes would you have if you
had 10 kg of ginger cupcakes?
boxes
T
E
A
1. 6:45
=
11
10
9
8
7
12
6
1
2
3
4
5
2. 0.3 + 5 + 0.05 + 70 =
3. 9 × 7 =
RAY’S POCKET MONEY
€5
€4
€3
€2
€1
€0
J F M A M J J A S O N D
4. In which month did
Ray receive the most
money?
5. In which month(s) did
he receive no pocket
money?
6. 5 + > 11
7. Is this angle acute?
8. 1 3 of = 5
9. 2,000 + 900 + 80 + 3
=
10. 2.3 – 0.5 =
11. 700 – 29 =
12. 1 3 4 hours =
or
,
hour(s)
minute(s)
13. 1,000 – 201 =
minute(s)
14. Write as a decimal.
400 m = .
15. A large cupcake
weighs 1 4 kg. A tray
with 4 rows of 6 large
cupcakes weighs
kg.
16. Share €55.00 equally
among 10 people.
€ each
17. 5 hours 40 min.
subtract 2 hours 15
min.
= hour(s)
18. 9.75 – 2.15 =
minute(s)
19. Which type of symmetry
does this letter have?
vertical
horizontal
20. Round 3,080 to the
nearest thousand.
21. Complete the times
with 8-minute intervals.
DEPARTURES
12.04 p.m.
Review sample
50
50 CUPCAKES
TOTAL 2 KG
GINGER
a.m.
p.m.
22. €20.00 – €12.50 =
€
23. How many laps are
needed for a 2-km
swim (25-m pool)?
24. 0.6 ÷ 2 =
25. 40 – 15 =
M
Week 36
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 109

MONDAY
TUESDAY
Week 37
1. 1:45 =
2. 9 × 6 =
11
10
9
8
7
3. What is the perimeter?
cm
4. 700 + 600 =
5. €10.00 – €4.50 = €
6. Write as a decimal.
40 cm = 0. m
7. 700 – 350 =
12
6
1
2
3
4
5
8. Share €75.00 equally among 10 people.
€ each
9. 2.2 km = m
10. How many metres swum in 20 laps of a 25-m
pool?
m
11. Product of 4 and 8 =
12. 0.6 + 0.9 =
13. 5.5 ÷ 5 =
14. Is this angle acute?
15. 9.65 – 3.42 =
16. (3 × 7) ÷ (21 ÷ 7) =
17. €19.05 = c
4 cm
18. In the pie chart, 7 children
have black hair. How many
children have blonde hair?
9 cm
12 cm
19. How many children have brown hair?
2 cm
BROWN
3 cm
BLONDE
BLACK
20. How many children have brown and black hair?
6 cm
11
10
12
9
3
1. =
8
7
6
1
2
4
5
2. What is the length of Side a?
m
3. What is the length of Side b?
m
4. What is the perimeter? m
5. 400 + 900 =
6. 600 – 290 =
7. 5 × 4 = (2 × 4) + ( × 4) =
8. 8.75 – 2.50 =
9. 6 hours 30 min. subtract 2 hours 30 min.
= hour(s) minute(s)
10. Draw an irregular hexagon.
11. 7 + 7 + 7 + 7 =
12. Share €95.00 equally among ten people.
13.
€ each
1
2 of a number is 14. What is the number?
14. 0.8 ÷ 4 =
15. If you bought 4 bread rolls at 45c each, what
change would you get from €5.00?
Review sample
€
16. 0.5, 1, 1.5, , 2.5
17. (3 × 9) ÷ (9 ÷ 1) =
18. 5 × 0.4 =
19. Round 1,092 to the nearest hundred.
20. The chance of landing on
an even number is
in .
:
6 m
b
6
11 m
a
7 m
1 2
5 4
3
3 m
110 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
12
11
10
1. 4:45 = 9
8
2. 400 – 33 =
3. 1 4 of 60 =
7
6
1
2
3
4
5
4. 1 2 < 1 3 True False
5. What is the shaded area?
squares
6. 1,200 + 900 =
7. Write as a decimal.
75 cm = 0. m
8. 0.6 ÷ 6 =
9. A wizard needs 100 m
of carrot juice.
Colour the level on the jug.
10. Share 49c equally among 7 people. How much
each? Complete the number sentence.
11. 7 × 0.9 =
12. Complete the
pattern.
c = c
13. 3,500 , 4,500 , 5,500 , 6,500 ,
14. How many right angles has a rhombus?
15. 18/8, what month is it?
16. How many metres swum
in 30 laps (25-m pool)?
17. (4 × 5) + (20 – 8) =
18. 28 + 42 =
19. The line of symmetry is
horizontal. vertical. diagonal.
20. 45, 51, 58, 66, , 85
line of symmetry
1
m
12
11
10
1. 5:45 =
9
8
7
2. 7 + 80 + 0.03 + 0.3 =
3. This is a net of a
4. 2 × 0.2 =
5. €15.20 = c
6. Is this angle obtuse?
7. 1,600 + 800 =
8. 700 – 340 =
9.
10.
3 , 0 4 8
+ 5 , 4 3 1
1
4 of = 9
11. 50 + 80 =
12. 2.3 + 0.9 =
13. 8.1 – 0.5 =
14. How many triangles
can you find?
Review sample
6
1
2
3
4
5
15. If you bought a litre of milk at €1.45, what
change would you get from €2.00?
16. 5 245 =
17. (6 + 9) + (7 × 2) =
18. 9 × 0.1 =
19. 0.9 ÷ 9 =
c
20. 10 × 5 = (4 × 5) + ( × 5) =
.
Week 37
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 111

PROBLEM-SOLVING
FRIDAY REVIEW
Week 37
Monday
1. Which spinner has the
better chance of landing
on a 6?
2. Which spinner has the worse
chance of landing on a 1?
B
A
E
Tuesday
1. Write the inside (internal) angles in the
correct place in the table.
2. Finish the pattern.
Wednesday
1. It took Conor 1 hour to swim 2 km in a
50-m pool. How many laps did he do?
laps
2. A 100-m freestyle race was won in a time
of 59.5 seconds. What time difference is
that from a minute?
Thursday
1. Emma and Laura have 9 bracelets. Laura
has twice as many as Emma. How many
bracelets does Laura have?
2. Tim drew a four-sided
shape with 4 right angles
and 2 lines of symmetry.
Draw the shape.
C
D
Right
angles
A
B
Acute
angles
2 1
6 3
4 5
1 2
6 3
5 4
Obtuse
angles
1. 2:45
=
11
10
9
8
7
12
6
1
2
3
4
5
2. 6 + 90 + 0.05 + 0.9 =
3. 1 4 of 80 =
4. Write as a decimal.
70 cm = 0. m
5. 2.4 + 0.8 =
6. How many metres have
you swum in 34 laps of
a 25-m pool?
7. 9 × 0.2 =
m
8. 1 3 of = 8
9. (3 × 4) ÷ (16 ÷ 4) =
10. This patio has an area of
m 2 .
8 m
11. 700 – 340 =
SWIMMING
3 m
BASKETBALL
FOOTBALL
12. In the pie chart, 6
children like swimming.
How many like
basketball?
13. 300 + 1,800 =
14. 25, 31, 38, 46,
15. Is this angle
acute?
16. What is the length of a?
cm
17. What is the length of b?
cm
18. What is the perimeter of
the above shape?
cm
19. 9.55 – 3.20 =
20. 0.8 ÷ 2 =
21. 70 + 60 =
22. How many triangles can
you find?
23. 4 × 7 =
24.
13 cm
7 cm 4 cm
9 cm
Review sample
b
a
1
2 of a number is 22.
What is the number?
25. The chance of a number
< 4 is
1 2
6 3
5 4
in .
112 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Draw in the minute
hand to show 4.28.
2. 0.6 ÷ 3 =
3. 17 – 9 =
4. €20.00 – €2.80 = €
5. 5 km + 400 m = m
6. Write the numeral four thousand and forty-four.
7. 30, 35, 45, 60, , 105
8. 6 + 8 =
9. Write as a decimal.
10.
400 m = 0.
5 , 0 4 2
+ 3 , 9 1 7
11. 0.9 = 10
12. 0.3 + 0.5 =
13. 2 3 of = 14
14. 0.9 – 0.3 =
15. 6 rows of 4 stickers = stickers
16. Halve 10.2.
17. Which lines are perpendicular?
A
18. Which is lighter?
B
50 kg 5,000 g
19. (200 – 100) × (2 × 5) =
20. 8,099 > 8,100 True False
9
10
8
11
7
12
6
1
5
2
4
3
1. Draw in the minute
hand to show 9.57.
2. 7 × 0.1 =
3. 200 – 140 =
4. 0.9 ÷ 2 =
5. What are the chances of selecting an odd number
from a hat with the numbers 10 – 20?
6. 2 10 = 0.
7. 5 × 9 =
out of
8. Draw a reflection of:
9. Which lines are parallel?
A
10. Sum of 8 and 9 =
11. What is the value of the 5 in 6.15?
12. Write as a decimal.
60 cm = 0. m
13. 7 × 3 = (1 × 3) + ( × 3)
B
14. What is the area of a rectangle 7 cm by 5 cm?
cm 2
15. (5 × 5) + 25 =
16. The total area of the
paving and garden is
Review sample
17. 4 220 =
m 2 .
18. 9,090 < 9,099
True
False
19. If you slice this pyramid
horizontally, what 2-D shape
will the cut face show?
9
10
8
11
7
12
6
8 m
paving
1
5
2
4
3
garden
2 m
2 m
Week 38
20. 0.9 + 0.3 =
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 113

WEDNESDAY
THURSDAY
Week 38
1. Draw in the minute
hand to show 7.24.
2. 0.4 ÷ 8 =
3. 300 – 60 =
4. 7.70 – 5.20 =
5. 7.7 – 5.2 =
6. €11.35 + €0.35 = €
7. 0.08 + 0.1 =
8. Draw a reflection of:
9. Round 7,825 to the nearest thousand.
10. 6 hours 25 min. subtract 2 hours 35 min.
= hour(s) minute(s)
11. What is the place value of the 3 in 4.3?
12. Which lines are perpendicular?
A
B
13. 4 5 of a number is 8.
What is the number?
14. Write as a fraction.
500 g = kg
15. If you slice this prism horizontally, which shape
will the cut face show?
16. Colour an arrow to
show where the
balance scales will tip.
17. 500 + 250 =
18. The patio has an area of
m 2 .
4 m
A
9
10
8
11
7
12
6
1
5
B
= 400 kg = 6,000 g
2
4
3
1. Which number is nearest to 9,000?
9,100 8,890 8,950
2. 400 – 35 =
3. 0.4 ÷ 1 =
4. 700 + 900 =
5. 0.2 + 0.05 =
6. 4 × 5 = (2 × 5) + ( × 5)
7. Which lines are perpendicular?
A
8. Halve 150.
9. Double 110.
10. Draw a reflection of:
B
11. The line of symmetry is
horizontal.
vertical.
diagonal.
12. 6 + 7 + 5 =
13. 4 + 4 + 4 + 4 =
14. The chance of a multiple of 4 is
in .
15. Which is longer?
16. 5 305 =
17. 40 × 5 =
18.
4 1 2 cm 0.1 m
7 , 6 5 2
– 4 , 3 1 0
18 16
8 24
20 28
Review sample
19. 26 + 12 =
20. 4 620 =
4 m
19. 3 km 150 m = . km
20. Write 0.92 as a fraction.
114 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
Monday
1. Colour the correct sign.
4 × 19 kg 5 × 15 kg
2. The distance between
the towns is
kilometres.
Tuesday
1. Luke used 50 5-cm rods and
10-cm rods to make 5 m.
2. Complete the pattern.
Wednesday
1. Chloe had a stack of 20c coins. She used
some of the coins to buy a €2.20 chocolate
bar. Chloe had €1.60 left. What was the
original amount of 20c coins?
2. A baker adds jam and cream to 2 3 of a tray
of scones. The tray has 4 rows of 9 scones.
How many don't have jam and cream?
PHONE APPS
Jess
Jen
Jay
Thursday
170 km Seaport
90 km Mayfield
= 3 = 1
9
10
8
11
1. Draw in the minute
hand to show 2.48.
2. 200 – 40 =
3. 600 + 900 =
4. 0.9 ÷ 3 =
5. 2 3 of = 16
6. 0.03 + 0.3 =
7. Halve 250.
8. Bill has 8 sweets. Kelly
has 12 sweets. Total?
Complete the sentence.
9. 8.75 – 2.51 =
10. 2 km 250 m =
. km
11. 200 ÷ 2 =
12. 600 + 450 =
7
12
6
=
13. Match the words to the
lines.
1
5
2
4
3
perpendicular
parallel
17. (7 × 4) – (4 × 2) =
18.
5 , 0 4 8
– 3 , 8 1 0
19. 250 + 350 =
20. Colour an arrow
to show where the
balance scales will tip.
= 250 kg = 200 kg = 3,000 g
21. 4 100 =
22. 7,090 < 7,099
True
23. Double 0.3.
False
24. Complete the pattern.
line of symmetry
25. The cut face is from
which 3-D shape?
Review sample
A
cut face
A B C
B
Week 38
1. How many more apps does Jay have than
Jess?
apps
2. How many apps in total?
apps
14. 7 rows of 4 stickers =
stickers
15. 0.3 + 0.6 =
16. Write as a decimal.
600 m = .
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 115

MONDAY
TUESDAY
Week 39
1. 1 4 kg × 4 = kg
2. 2 × 1,000 =
3. Complete to show 8-minute intervals.
DEPARTURES
4.03 a.m.
4. 8 + 4 =
5. 20 – 12 =
a.m.
a.m.
a.m.
6. 6 hours 15 min. subtract 4 hours 30 min.
= hour(s) minute(s)
7. 5 + 0.5 + 0.05 =
8. 41 + 19 =
9.
10. 700 – 25 =
11. 20, 80, 140, , 260
12. 520 cm = . m
13.
5 , 0 8 6
– 2 , 1 3 4
2
3 = 9
14. 63 ÷ 7 =
15. 1.2 ÷ 4 =
16. 1 4 of 12 =
17. Jane weighs 39.8 kg. Bob weighs 37.5 kg. How
much heavier is Jane?
kg
18. Double 35.
19. Write the time on the clock
as digital time.
20. 4,000 + 20 + 3 =
9
10
8
11
7
12
6
1
5
2
4
3
1. 1 4 kg × 6 = kg
2. 4 hours 15 min. add 3 hours 45 min.
= hour(s) minute(s)
3. 4 × 1,000 =
4. 5 + 8 =
5. 14 – 9 =
6. Pair the parallel sides.
and
and
and
and
7. 2 + 0.2 + 0.02 =
8. (5 × 6) × 3 = 5 × ( × 3)
9. Complete the times to
show 15-minute intervals.
10. 10 × 12 =
11. 800 – 25 =
12. 21 + 19 =
13. Write the time on the clock
as digital time.
14. 72 ÷ 8 =
15. Order from greatest to least.
16.
0.6 1.1 0.9 1
17. 8.5 m = cm
18. 997 + 8 =
19. 4 × 5 = 10 ×
, , ,
20. 6,000 + 300 + 60 + 3 =
G
H
F
9
10
8
11
7
A
E
12
6
1
5
B
D
DEPARTURES
10.05 a.m.
Review sample
3 , 4 2 1
+ 6 , 5 3 0
a.m.
a.m.
a.m.
2
4
C
3
116 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

WEDNESDAY
THURSDAY
1. Write the time on the clock
as digital time.
2. 6 + 7 =
3. 5 × 1,000 =
4. 15 – 8 =
5. If it is 6.25 a.m., what will be the time in
35 minutes?
6. 70 + 0.7 + 0.07 =
7. What is 2 5 of 2,500 metres? m
8. 1.6 ÷ 8 =
9. 7 × 6 =
10. A wizard needed 600 m
of celery juice.
Colour that amount on
the jug.
11.
2 3 1
× 3
12. 63 ÷ 9 =
13. 31 + 19 =
14. Is your pen symmetrical?
15. What is the perimeter of a square with 4-cm
sides?
cm
16. 800 – 25 =
17. 70 + 80 + 20 =
18. 0.8 × 5 =
19. 999 + 9 =
20. Round 6,937 to the nearest hundred.
9
10
8
11
7
1
12
6
1
5
2
4
3
1. Write the time on the clock
as digital time.
2. What is the time difference
between these two swimmers?
Seconds: (A) 50.2 (B) 49.8
seconds
3. The line of symmetry is
horizontal. vertical. diagonal.
4. 6 × 1,000 =
5. 7 hours 45 min. subtract 1 hour 50 min.
= hour(s) minute(s)
6. 7 + 9 =
7. 17 – 8 =
8. 36 ÷ 4 =
9. 20 + 0.02 + 0.2 =
10. 1.8 ÷ 2 =
11. 40 + 80 + 40 =
12. 1,000 – 25 =
13. 51 – 19 =
14. This is an irregular
15. The capacity is 1 500 m .
The markings are equal to
Review sample
2 L
100 m .
16. 0.2 = 10
17. 0.6 × 5 =
18. 2:03
19.
4
8 = 2
1
4 .
minutes past
20. €20.00 – €8.20 = €
9
.
10
8
1
2 .
11
7
12
6
1
5
2
4
3
Week 39
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 117

PROBLEM-SOLVING
FRIDAY REVIEW
Week 39
Monday
1. The product of two numbers is 72. The sum
of the numbers is 17. The numbers are
and .
2. A library packed 9,000 books in boxes of
200. If it took 5 minutes to pack a box, how
long did it take to pack all 9,000 books?
hour(s)
Tuesday
minute(s)
1. A florist arranges bouquets of flowers with
4 roses for every 2 tulips. How many roses
in a bouquet of 24 flowers?
roses
2. Complete the pattern.
Wednesday
1. Draw the 3 lines of symmetry on the
triangle.
2. The triangle is
isosceles.
equilateral.
Thursday
1. A 500-g box has 20 equal pieces of
chocolate. What is the weight of each piece?
g
2. This triangle was cut from a 12-cm 2
rectangle. What were the measurements of
this rectangle?
length = cm
width =
3 cm
cm
3 cm
5 cm
3 cm
3 cm
1. 1 4 kg × 10 =
kg
2. 5 × 1,000 =
3. 16 – 9 =
4. 32 ÷ 8 =
5. 30 + 0.7 + 0.06 =
6. 1,000 – 25 =
7. 41 + 19 =
8. 6 hours 20 min.
subtract 3 hours 45
min.
= hour(s)
minute(s)
9. 630 cm = m
10. 1.6 ÷ 4 =
11. 11 × 5 =
12. Is a car tyre
symmetrical?
13. 30, 60, 120, ,
480
14.
4 , 9 6 3
– 2 , 6 3 0
15. Pair the parallel sides.
and
and
and
16. Colour 750 m .
17. 6,000 + 40 + 2 =
18.
6
9 = 3
19. Complete the times
with 15-minute
intervals.
DEPARTURES
2.09 p.m.
p.m.
p.m.
20. What is the perimeter
of a regular hexagon
with 4-cm sides?
21. 0.6 × 5 =
cm
22. The line of symmetry is
horizontal.
vertical.
diagonal.
23. 9,099 > 9,900
Review sample
F
A
B
True
24. 997 + 9 =
25.
1
2 3 4
× 2
False
4 cm
E
D
C
118 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MONDAY
TUESDAY
1. Write the time on the clock
as digital time.
2. €20.00 – €4.90 =
€
3. What will you pay for 3 kg
of watermelon at 65c per kg?
€
4. 50 + 90 =
5. What is 3 4 of one metre? cm
6. 6 – 0.7 =
7. , 9.9, 9.8, 9.7
8. 3 = 1 3 of
9. Which lines are perpendicular?
A
10. 250 + 350 =
11. 5 × 80 =
12. 1,000 – 101 =
13. 2 3 of = 8
14. 5.40 + 3.25 =
15. 0.5 ÷ 2 =
16. 0.6 + 0.4 =
17. What is the place value of the 4 in 2.4?
18. In the pie chart, 12 children
have blue eyes. How many
have green eyes?
B
9
10
8
11
7
BLUE
12
6
BROWN
1
5
4
GREEN
2
3
1. Write the time on the clock
as digital time.
2. How many kilograms of
oranges will you have if you
spend €40.00 and the oranges
cost €5.00 for a 10-kg bag?
3. 5 × 11 =
4. 80 + 90 =
kg
5. 2 hours 55 min. add 4 hours 30 min.
= hour(s) minute(s)
6. 6 × 1.1 =
7. 5 – 0.5 =
8. How many minutes difference
between 4.30 p.m. and 9 p.m.?
9. Complete the pattern.
10. 0.8 + 0.2 =
11. (3 × 4) × 5 = 3 × ( × 5)
12. 6 × 50 =
13. This is a .
14. What is the chance of you
winning a toss of a coin?
15. 10:38
minutes to
16. Draw an irregular hexagon.
9
10
8
11
7
in
12
6
line of symmetry
Review sample
1
5
2
4
3
Week 40
19. How many have brown and green eyes?
20. How many children altogether?
17. 2 + 9 + 5 =
18. 2 × 19 × 50 =
19. Write the lowest number possible
using the digits 8, 7, 9 and 0.
20. Double 65.
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 119

WEDNESDAY
THURSDAY
Week 40
1. Write the time on the clock
as digital time.
2. 900 – 25 =
3. 80 + 0.2 + 0.05 =
4. 90 + 90 =
5. What is the date a week
before the 17th of January?
6. 9 × 1.1 =
7. 4 – 0.3 =
8. The area is m 2 .
9. 6.3 + 0.5 =
10. Share €75.00 equally among 10 people.
€ each
11. €20.00 – €17.50 = €
12. Jill is 1.25 m tall. Ken is 1.34 m tall. What is their
combined height?
13. 7 × 30 =
m
14. Is Z symmetrical?
15. 0.9 ÷ 3 =
16. 4 5 of = 16
17. €10.20 = c
18. How many laps of a 50-m pool are needed to
swim 1,500 m?
19. How many 20s in 200?
20. 1.1 – 0.3 =
5 m
9
10
8
4 m
11
7
12
6
1
5
2
4
3
1. Write the time on the clock
as digital time.
2. What is the date one week
after Christmas Day?
3. Complete the pattern.
4. 2 – 0.2 =
5. 90 – 25 =
6. 6 m 50 cm = . m
7. 7 × 1.1 =
8. 30 + 80 =
9. 8 hours 25 min. add 6 hours 40 min.
= hour(s) minute(s)
10. 0.2 ÷ 5 =
11. €20.00 – €13.60 = €
12.
13. 8 × 60 =
14. Name this shape.
15. The area = cm 2
16. 1 4 of 80 =
17. 32 × 9 =
18.
19. 4 + 6 =
20. A stack of 21 coins is made up of twelve 50c and
nine 20c coins. What is the total value of the stack
of coins?
€
2 4 0
× 2
9 , 7 5 4
– 4 , 0 4 1
9
10
8
11
7
12
6
line of symmetry
10 cm
Review sample
4 cm
1
5
2
4
3
120 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

PROBLEM-SOLVING
FRIDAY REVIEW
CAFE 300 M
Monday
A B C D
1. The gaps between A, B, C and D are equal.
What is the distance of each gap?
m
2. The distance from the sign to the last pole is
m.
Tuesday
1. How many 10-cm rods will
you need to measure 360 cm?
2. How many 1 2 -m rods will
you need to measure 30 m?
Wednesday
1. Finish drawing the rectangle below with the
length 3 times its width. Use a ruler.
2. What is the area in square centimetres?
cm 2 Thursday
1. Nina ran 4 laps of a 350-m track. The total
distance she ran was
km m.
2. A jelly bean recipe uses 1 4 of a cup of
2 L
sugar to make 50 jelly beans. 1 1 2 cups of
sugar will make
jelly beans.
CAFE
1. Write the time on the
clock as digital time.
2. 7.2 m = cm
3. 500 + 600 =
4. 2 × 27 × 50 =
5. 0.25 m = cm
6. Double 55.
7. 1.1 – 0.4 =
8. How many 20s in
1,000?
9. €20.00 – €5.60 =
€
9
10
8
11
10. 0.7 + 0.3 =
11. 1 3 of = 6
12. 80 × 2 =
13. , 9.9, 9.8, 9.7
14. 5.40 + 2.55 =
15. 60 + 50 =
16. 1.4 ÷ 7 =
17. 1,000 – 10 =
7
12
18. Each mark equals
6
100 m .
250 m .
500 m .
1
5
2
4
3
19. 8:32
minutes to
20. Draw an octagon
using the two squares
as an aid.
21. Complete the pattern.
22. This patio has an area
of
m 2 .
9 m
23. 1 4 of 40 =
24. What is the chance
of winning a toss of a
coin?
25.
line of symmetry
Review sample
2
1
in
4 2 3
× 2
4 m
Week 40
4th Class 978-1-92096-242-5 Prim-Ed Publishing – www.prim-ed.com New Wave Mental Maths 121

MATHS FACTS
Strand: Number
Place Value
9, 7 4 1 . 2 5
9, 0 0 0 . 0 0
7 0 0 . 0 0
4 0 . 0 0
1 . 0 0
. 2 0
. 0 5
1
2
1
4
1
6
1
9
thousands hundreds tens units • tenths hundredths
9 7 4 1 • 2 5
Counting Numbers
999 1,000 1,001
1,999 2,000 2,001
2,999 3,000 3,001
3,999 4,000 4,001
4,999 5,000 5,001
5,999 6,000 6,001
6,999 7,000 7,001
7,999 8,000 8,001
8,999 9,000 9,001
9,999 10,000 10,001
1
3
1
5
1
8
1
10
Multiplication
34 × 29 = (30 × 29) + (4 × 29)
Algorithm: 3 4
× 2 9
3 0 6 34 × 9
+ 6 8 0 34 × 20
9 8 6
Division
Algebra
21 = 3 × a
a = 7
24 ÷ b = 8
b = 3
72 ÷ 6 = (60 ÷ 6) + (12 ÷ 6)
= 10 + 2
= 12
8 0 7 4 7 4 r 2
1
1
Algorithm: 4 3 2 0 4 2 9 6 4 2 9 8
Fractions
0 1
1
6
1
5
Review sample
1
10
2
10
1
4
3
10
1
3
2
6
2
5
4
10
1
2
5
10
3
6
2
4
3
5
6
10
2
3
4
6
7
10
3
4
4
5
8
10
5
6
9
10
1
12
1
8
2
8
3
8
4
8
5
8
6
8
7
8
122 New Wave Mental Maths Prim-Ed Publishing – www.prim-ed.com 978-1-92096-242-5 4th Class

MATHS FACTS
2×
table ÷ 2 quotient 2
1 × 2 = 2 2 × 1 = 2 2 ÷ 2 = 1 2 ÷ 1 = 2
2 × 2 = 4 4 ÷ 2 = 2
3 × 2 = 6 2 × 3 = 6 6 ÷ 2 = 3 6 ÷ 3 = 2
4 × 2 = 8 2 × 4 = 8 8 ÷ 2 = 4 8 ÷ 4 = 2
5 × 2 = 10 2 × 5 = 10 10 ÷ 2 = 5 10 ÷ 5 = 2
6 × 2 = 12 2 × 6 = 12 12 ÷ 2 = 6 12 ÷ 6 = 2
7 × 2 = 14 2 × 7 = 14 14 ÷ 2 = 7 14 ÷ 7 = 2