Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 407 · 40 sums

The method (Flip and multiply): a/b × c/d = (a × c)/(b × d), then simplify. A whole number n is n/1. a/b ÷ c/d = a/b × d/c. Decimal × decimal: multiply as whole numbers; the answer has as many decimal places as both numbers together — 1.2 × 0.3 = 0.36. Decimal ÷ decimal: multiply both by 10 (or 100) first — 2.4 ÷ 0.6 = 24 ÷ 6 = 4.

1. 1.One bottle of oil holds 4.9 L. How many L do 10 of them make in all? =
2. 2.0.8 ÷ 0.4 =
3. 3.6.5 × 0.3 =
4. 4.1/4 × 3/7 =
5. 5.7.2 ÷ 0.9 =
6. 6.29.24 ÷ 4 =
7. 7.6/7 × 5 =
8. 8.7/8 ÷ 8/9 =
9. 9.1/2 × 1/2 =
10. 10.1/4 × 2/9 =
11. 11.5/7 ÷ 5/8 =
12. 12.1.8 × 0.6 =
13. 13.4/5 × 4 =
14. 14.2.32 ÷ 2 =
15. 15.2/5 × 7 =
16. 16.1/2 ÷ 2/5 =
17. 17.One bottle of oil holds 1.6 L. How many L do 6 of them make in all? =
18. 18.1/5 × 15 =
19. 19.5/7 ÷ 7/9 =
20. 20.1/4 × 3/5 =
21. 21.3.2 × 0.4 =
22. 22.1/5 × 5/9 =
23. 23.One bottle of oil holds 1.1 L. How many L do 4 of them make in all? =
24. 24.One roll of ribbon has 9 m. How many m do 10 of them make in all? =
25. 25.6/7 × 4/7 =
26. 26.6.7 × 0.3 =
27. 27.54.88 ÷ 8 =
28. 28.3/5 × 5/7 =
29. 29.2.08 ÷ 2 =
30. 30.1/4 × 7/9 =
31. 31.One packet of rice weighs 9.8 kg. How many kg do 12 of them make in all? =
32. 32.41.65 ÷ 5 =
33. 33.8/9 × 5/9 =
34. 34.2 ÷ 0.5 =
35. 35.5/7 × 2/3 =
36. 36.1/3 × 2/5 =
37. 37.One bag of potatoes weighs 9.7 kg. How many kg do 9 of them make in all? =
38. 38.12.04 ÷ 4 =
39. 39.1/9 × 2 =
40. 40.One packet of rice weighs 1.8 kg. How many kg do 3 of them make in all? =

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