RIC-20164 ACM Measurement and Geometry (Yr 5) Using units of measurement 2

Sub-strand: Using units of measurement
Answers
Area
UUM –1
3. The perimeters are all the same (12 units), but the
areas are different.
Page 10 Resource sheet – Paperclip chains
Page 26 Assessment 1 – Twelve squares
Teacher check
1. (a) (i) P = 12 cm A = 6 cm 2 (ii) P = 16 cm A = 9 cm 2
Page 12 Resource sheet – Ambitious areas
(iii) P = 18 cm A = 8 cm 2 (iv) P = 12 cm A = 5 cm 2
1.–2. Teacher check
(v) P = 12 cm A = 8 cm 2
3. Bird: 19.5 squares Rabbit: 26 squares
(b) (i) (iv) (v) (c) (iii) (v)
2. (a) 22 units (b) 10 square units
Page 13 Resource sheet – Boxes of eight
3. (a) Teacher check
Teacher check
(b)–(c)
Page 14–15 Resource sheet – Mystery tour
Sketch Length Width Perimeter
3 5 cm 4 cm 2 cm 40 cm 3 80 cm 2 (g) 7:14 am
(h) 4:21 pm
You will be taken to the zoo.
12 square
12 units 1 unit 26 units
units
Page 16 Resource sheet – Units of length
12 square
6 units 2 units 16 units
units
1. (a) tape measure (b) 30 cm ruler
(c) tape measure (d) tape measure or 1 m ruler
12 square
4 units 3 units 14 units
units
(e) trundle wheel (f) 30 cm ruler
(g) trundle wheel (h) pedometer
4. The areas are the same for all of the rectangles, but
the perimeters are different. The longer and thinner
2. Teacher check
the shape, the greater the perimeter.
Page 17 Assessment 1 – Units of length
UUM – 3
Teacher check
Page 33 Resource sheet – The 24-hour clock
Page 18 Assessment 2 – Boxes and more boxes
1. (a) 0400 (b) 1400
1. (a) Teacher check (b) 24 cm 3
(c) 1200 (d) 2400
(c) Their volume is the same, but their shapes are
(e) 1223 (f) 0525
different.
(g) 2115 (h) 0420
2. (b)
Surface
Prism Length Width Height Volume
area 2. (a) 1:48 pm (b) 3:44 am
1 3 cm 3 cm 3 cm 27 cm 3 54 cm 2
(c) 10:15 pm (d) 6:05 pm
2 2 cm 2 cm 1 cm 4 cm 3 16 cm 2
(e) 11:11 am (f) 10:22 pm
UUM – 2
(c) Teacher check
Page 24 Resource sheet – Area the same
1. Teacher check
2. a perimeter of 12 units P = 12; A = 8
a perimeter of 14 units P = 14; A = 8
a perimeter of 16 units P = 16; A = 8
a perimeter of 18 units P = 18; A = 8
a perimeter of 18 units P = 18; A = 8
3. The areas are all the same (8 square units), but the
perimeters are different.
Page 25 Resource sheet – Perimeter the same
1. Teacher check
2. (a) 1 tile P = 12; A = 7
(b) 2 tiles P = 12; A = 6
(c) 3 tiles P = 12; A = 5
Page 39 Assessment 1 – It’s about time
1. 10:49 am is 1049. The bus leaves at 1137. 1049 until
1100 is 11 minutes, plus the extra 37 minutes until
1137 gives 48 minutes. Answer: 48 minutes
2. 2:00 is 1400. The trip takes 32 minutes, so the latest
bus she could take would be 1328 (1400–32 minutes).
The bus that leaves just before 1328 is the 1305 bus.
Answer: The 1305 bus
3. 7:30 am is 0730. An hour later it would be 0830. The
closest bus to that time is the 0837 bus.
Answer: The 0837 bus
4. 10:30 am is 1030. The trip takes 32 minutes, so the
latest bus she could take would be 0958. The bus that
leaves just before 0958 is the 0955 bus.
Answer: The 0955 bus
5. 3:45 pm is 1545. The next bus is at 1604. It is 15
minutes from 1545 until 1600; add on the extra 4
minutes until 1604, and the wait is 19 minutes.
Answer: The 1604 bus. A 19 minute wait
©R.I.C. Publications
Low Resolution Images
Display Copy
Australian Curriculum Mathematics resource book: Measurement and Geometry (Year 5) R.I.C. Publications ® www.ricpublications.com.au 41