Grade 1: Step Up to Grade 2

Multiplying by 2 and 5
© Pearson Education, Inc.
Name
Name
Multiplying by 2 and 5
1. Continue skip counting by 2s on the number line below.
Intervention Lesson B47
Math Diagnosis and
Intervention System
Intervention Lesson B47
2 2 2 2 2 2 2 2 2 2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
2. Each number that a hop lands on is a multiple of two.
Circle each multiple of 2 on the number line. Then list them
in the blanks below.
2 4 6 8 10 12 14 16 18 20
3. To find 6 2, count by 2s until 2s Facts
you have said 6 numbers.
0 × 2 = 0 5 × 2 = 10
2, 4, 6 , 8 , 10, 12
So, 6 2 12 .
4. Repeat 3 above for each
of the 2s facts in the table.
Complete the table.
1 × 2 = 2 6 × 2 = 12
2 × 2 = 4 7 × 2 = 14
3 × 2 = 6 8 × 2 = 16
4 × 2 = 8 9 × 2 = 18
5. Reasoning What is the pattern in the products of the 2s facts?
All of the multiples of 2 end in 0, 2, 4 , 6 , or 8 .
6. Continue skip counting by 5s on the number line below.
Circle each multiple of 5 on the number line.
5 5 5
5 5 5 5 5 5
0 5 10 15 20 25 30 35 40 45
Multiplying by 2 and 5 (continued)
158 Intervention Lesson B47
Intervention Lesson B47 157
Math Diagnosis and
Intervention System
Intervention Lesson B47
7. Circle each multiple of 5 on the number line. Then list them
in the blanks below.
5 10 15 20 25 30 35 40 45
8. To find 7 5, count by 5s until 5s Facts
you have said 7 numbers.
0 × 5 = 0 5 × 5 = 25
5, 10, 15, 20 , 25 ,
30 , 35
So, 7 5 35 .
9. Repeat 8 above for each of
the 5s facts in the table.
10. Reasoning What is the pattern in
the products of the 5s facts?
All of the multiples of 5 end in 0 or 5 .
Complete each multiplication problem.
1 × 5 = 5 6 × 5 = 30
2 × 5 = 10 7 × 5 = 35
3 × 5 = 15 8 × 5 = 40
4 × 5 = 20 9 × 5 = 45
11. 2 12. 2 13. 2 14. 2
_ 3 _ 6 _ 2 _ 1
6 12 4 2
15. 7 16. 7 17. 5 18. 8
_ 2 _ 5 _ 3 _ 5
14 35 15 40
19. 5 20. 1 21. 2 22. 5
_ 4 _ 5 _ 4 _ 2
20 5 8 10
23. Reasoning Movie tickets are on sale for $5 each. Ross, Emily,
and John want to see the movie. Is $18 enough for all of their
tickets? Explain.
Yes; 3 5 15 and $15 $18.
© Pearson Education, Inc.
Teacher Notes
Math Diagnosis and
Intervention System
Intervention Lesson B47
Ongoing Assessment
Ask: Since all the multiples of 2 end in either 0,
2, 4, 6, or 8, are multiples of 2 odd or even? Even
Error Intervention
If students are having trouble with problems like
2 8,
then have the students think about the doubles
addition facts. 2 8 is 2 groups of 8, or 8 8.
Since 8 8 16, then 2 8 16.
If You Have More Time
Have 2 students each take 9 index cards and label
their cards 1 through 9. Shuffle the cards. The
first round is 2s facts. Each student takes a turn
drawing a card and finding the product of that
number times 2. If correct, the student keeps the
card, otherwise it goes back into the pile. After all
cards from the pile are used, shuffle and repeat with
the 5s facts.
© Pearson Education, Inc. 1