Singapore Math Level 2A & 2B - Unit 6: MULTIPLYING AND DIVIDING NUMBERS BY 4, 5, AND 10 - 34 Questions
Unit 6: MULTIPLYING AND DIVIDING NUMBERS BY 4, 5, AND 10
Complete the following tables.
1. Each car has 4 wheels.
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Number of cars | 1 | 2 | 4 | 9 | |
Number of wheels | 4 | 8 | 28 |
Solution(1):
Number of cars | 1 | 2 | 4 | 7 | 9 |
Number of wheels | 4 | 8 | 16 | 28 | 36 |
[Note: Multiplying and Dividing Numbers by 4; then, 4×4=16, 28÷4=7, 9×4=36.]
2. Each hand has 5 fingers.
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Number of hands | 2 | 6 | 10 | ||
Number of fingers | 10 | 20 | 45 |
Solution(2):
Number of hands | 2 | 4 | 6 | 9 | 10 |
Number of fingers | 10 | 20 | 30 | 45 | 50 |
[Note: Multiplying and Dividing Numbers by 5; then, 20÷5=4, 6×5=30, 45÷5=9, 10×5=50.]
3. Each vase has 10 flowers.
Number of vases | 3 | 7 | 8 | ||
Number of flowers | 30 | 50 | 100 |
Solution(3):
Number of vases | 3 | 5 | 7 | 8 | 10 |
Number of flowers | 30 | 50 | 70 | 80 | 100 |
[Note: Multiplying and Dividing Numbers by 10; then, 50÷10=5, 7×10=70, 8×10=80, 100÷10=10.]
Fill in each blank with the correct answer.
4. 6×4=___
5. 3×5=___
6. 6×5=___
7. 9×5=___
8. 3×10 =___
9. 8×10 =___
10. 9×4 =___
11. 7×10 =___
12. 2×4 =___
13. 7×5=___
Solution(4-13):
4. 6×4=24
5. 3×5=15
6. 6×5=30
7. 9×5=45
8. 3×10 =30
9. 8×10 =80
10. 9×4 =36
11. 7×10 =70
12. 2×4 =8
13. 7×5=35
Fill in each blank with the correct answer.
14. 30÷5=___
15. 20÷10=___
16. 16÷4=___
17. 40÷5=___
18. 24÷4=___
19. 90÷10=___
20. 12÷4=___
21. 100÷10=___
22. 10÷5=___
23. 40÷10=___
Solution(14-23):
14. 30÷5=6
15. 20÷10=2
16. 16÷4=4
17. 40÷5=8
18. 24÷4=6
19. 90÷10=9
20. 12÷4=3
21. 100÷10=10
22. 10÷5=2
23. 40÷10=4
Write 2 multiplication & also 2 division sentences for each set of pictures.
24.
___×___=___ ___÷___=___
___×___=___ ___÷___=___
Solution(24):
5 × 4 = 20
4 × 5 = 20
20 ÷ 5 = 4
20 ÷ 4 = 5
25.
____×___=___ ____÷___=___
____×___=___ ____÷___=___
Solution(25):
6 × 4 = 24
4 × 6 = 24
24 ÷ 6 = 4
24 ÷ 4 = 6
26.
___×____=___ ___÷____=___
___×____=___ ___÷____=___
Solution(26):
7 × 10 = 70
10 × 7 = 70
70 ÷ 7 = 10
70 ÷ 10 = 7
27.
____×____=___ ___÷____=___
____×____=___ ___÷____=___
Solution(27):
8 × 5 = 40
5 × 8 = 40
40 ÷ 8 = 5
40 ÷ 5 = 8
28.
___×____=___ ___÷____=____
___×____=___ ___÷____=____
Solution(28):
3 × 4 = 12
4 × 3 = 12
12 ÷ 3 = 4
12 ÷ 4 = 3
Solve the following story problems. Show your work in the space below.
29. Mom buys 6 bags of apples. There are 5 apples in each bag. How many apples are there altogether?
There are ___ apples altogether.
Solution(29):
6 × 5 = 30
There are 30 apples altogether.
30. Sam spends $10 every week. How much does he spend in 8 weeks?
Sam spends $ ___ in 8 weeks.
Solution(30):
8 × $10 = $80
Sam spends $80 in 8 weeks.
31. Leyla bought 4 meters of fabric. Each meter cost $7. How much did Leyla spend altogether?
Leyla spent $___ altogether.
Solution(31):
4 × $7 = $28
Leyla spent $28 altogether.
32. Dad sews 15 buttons on 3 shirts. How many buttons are there on each shirt?
There are ___ buttons on each shirt.
Solution(32):
15 ÷ 3 = 5
There are 5 buttons on each shirt.
33. Alfred packs 10 packages of crackers into each bag. If there are 1 hundred packages of crackers, how many bags does Alfred need?
Alicia needs ___ bags.
Solution(33):
100 ÷ 10 = 10
Alicia needs 10 bags.
34. Maggy saves $5 every month. How much will she save in 10 months?
Maggy will save $___ in 10 months.
Solution(34):
10 × $5 = $50
Maggy will save $50 in 10 months.
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