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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 460 · 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. 1.4/7 ÷ 5/6 =
  2. 2.4/7 × 4/7 =
  3. 3.4/9 × 5 =
  4. 4.5/6 × 2/9 =
  5. 5.1/4 × 1/5 =
  6. 6.14.4 ÷ 5 =
  7. 7.One jug of milk holds 7.6 L. How many L do 10 of them make in all? =
  8. 8.18.1 ÷ 2 =
  9. 9.2.4 ÷ 0.4 =
  10. 10.2.4 ÷ 0.6 =
  11. 11.One bag of potatoes weighs 5.4 kg. How many kg do 4 of them make in all? =
  12. 12.4/5 ÷ 5/7 =
  13. 13.One packet of rice weighs 2.9 kg. How many kg do 10 of them make in all? =
  14. 14.One packet of rice weighs 2.3 kg. How many kg do 3 of them make in all? =
  15. 15.One roll of ribbon has 6 m. How many m do 3 of them make in all? =
  16. 16.4/9 × 1/3 =
  17. 17.1/9 × 3 =
  18. 18.One bottle of oil holds 8.8 L. How many L do 12 of them make in all? =
  19. 19.8/9 × 4 =
  20. 20.4/5 × 4 =
  21. 21.2.4 × 0.6 =
  22. 22.4/5 × 15 =
  23. 23.One packet of rice weighs 5 kg. How many kg do 10 of them make in all? =
  24. 24.5/9 ÷ 3/5 =
  25. 25.17.2 ÷ 4 =
  26. 26.2.7 ÷ 0.9 =
  27. 27.37.1 ÷ 5 =
  28. 28.1/4 ÷ 4/9 =
  29. 29.23.6 ÷ 8 =
  30. 30.5.1 × 0.3 =
  31. 31.1/5 × 12 =
  32. 32.4/5 ÷ 1/9 =
  33. 33.One roll of ribbon has 3.2 m. How many m do 11 of them make in all? =
  34. 34.6.3 × 0.3 =
  35. 35.One roll of ribbon has 5 m. How many m do 12 of them make in all? =
  36. 36.0.68 ÷ 2 =
  37. 37.3/4 × 11 =
  38. 38.0.88 ÷ 2 =
  39. 39.5/9 × 2/9 =
  40. 40.0.6 ÷ 0.3 =

Answer key

  1. 24/35
  2. 16/49
  3. 20/9
  4. 5/27
  5. 1/20
  6. 2.88
  7. 76
  8. 9.05
  9. 6
  10. 4
  11. 21.6
  12. 28/25
  13. 29
  14. 6.9
  15. 18
  16. 4/27
  17. 1/3
  18. 105.6
  19. 32/9
  20. 16/5
  21. 1.44
  22. 12
  23. 50
  24. 25/27
  25. 4.3
  26. 3
  27. 7.42
  28. 9/16
  29. 2.95
  30. 1.53
  31. 12/5
  32. 36/5
  33. 35.2
  34. 1.89
  35. 60
  36. 0.34
  37. 33/4
  38. 0.44
  39. 10/81
  40. 2

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