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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 559 · 40 sums
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.One bottle of oil holds 3.7 L. How many L do 11 of them make in all? =
  2. 2.One roll of ribbon has 5.8 m. How many m do 2 of them make in all? =
  3. 3.One bag of potatoes weighs 2.8 kg. How many kg do 12 of them make in all? =
  4. 4.2.4 ÷ 0.3 =
  5. 5.One roll of ribbon has 5.7 m. How many m do 11 of them make in all? =
  6. 6.4.2 ÷ 0.7 =
  7. 7.2 ÷ 0.5 =
  8. 8.One bottle of oil holds 8.9 L. How many L do 10 of them make in all? =
  9. 9.3/4 × 5/8 =
  10. 10.1/3 × 5/9 =
  11. 11.8.6 × 0.5 =
  12. 12.2/5 × 6 =
  13. 13.One roll of ribbon has 1.6 m. How many m do 11 of them make in all? =
  14. 14.2/7 × 1/4 =
  15. 15.9.3 × 0.2 =
  16. 16.6/7 × 14 =
  17. 17.7.3 × 0.8 =
  18. 18.6.6 ÷ 0.6 =
  19. 19.4.48 ÷ 2 =
  20. 20.3 ÷ 0.3 =
  21. 21.8.7 × 0.6 =
  22. 22.One packet of rice weighs 8.9 kg. How many kg do 8 of them make in all? =
  23. 23.7/8 ÷ 2/3 =
  24. 24.One jug of milk holds 7.6 L. How many L do 8 of them make in all? =
  25. 25.1/4 ÷ 1/7 =
  26. 26.36.3 ÷ 5 =
  27. 27.1.2 ÷ 0.2 =
  28. 28.5/6 × 13 =
  29. 29.2.7 × 0.8 =
  30. 30.3/5 ÷ 1/2 =
  31. 31.1/3 ÷ 3/8 =
  32. 32.3/5 ÷ 1/4 =
  33. 33.One bottle of oil holds 4.1 L. How many L do 8 of them make in all? =
  34. 34.7/9 ÷ 1/2 =
  35. 35.1/4 × 2/7 =
  36. 36.2/3 × 7 =
  37. 37.One bag of potatoes weighs 6.9 kg. How many kg do 2 of them make in all? =
  38. 38.One jug of milk holds 8.8 L. How many L do 12 of them make in all? =
  39. 39.5.1 × 0.3 =
  40. 40.2/5 × 8 =

Answer key

  1. 40.7
  2. 11.6
  3. 33.6
  4. 8
  5. 62.7
  6. 6
  7. 4
  8. 89
  9. 15/32
  10. 5/27
  11. 4.3
  12. 12/5
  13. 17.6
  14. 1/14
  15. 1.86
  16. 12
  17. 5.84
  18. 11
  19. 2.24
  20. 10
  21. 5.22
  22. 71.2
  23. 21/16
  24. 60.8
  25. 7/4
  26. 7.26
  27. 6
  28. 65/6
  29. 2.16
  30. 6/5
  31. 8/9
  32. 12/5
  33. 32.8
  34. 14/9
  35. 1/14
  36. 14/3
  37. 13.8
  38. 105.6
  39. 1.53
  40. 16/5

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