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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 40 · 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 roll of ribbon has 2.5 m. How many m do 4 of them make in all? =
  2. 2.One packet of rice weighs 8.9 kg. How many kg do 5 of them make in all? =
  3. 3.9.4 × 0.3 =
  4. 4.4.8 × 0.5 =
  5. 5.One jug of milk holds 7.5 L. How many L do 4 of them make in all? =
  6. 6.One bottle of oil holds 6.3 L. How many L do 10 of them make in all? =
  7. 7.8.8 × 0.7 =
  8. 8.1/7 × 14 =
  9. 9.5/9 × 5/7 =
  10. 10.One bag of potatoes weighs 6.4 kg. How many kg do 7 of them make in all? =
  11. 11.1/9 × 6 =
  12. 12.One packet of rice weighs 5.1 kg. How many kg do 12 of them make in all? =
  13. 13.2/7 ÷ 4/7 =
  14. 14.9.6 × 0.3 =
  15. 15.48.55 ÷ 5 =
  16. 16.One roll of ribbon has 4.8 m. How many m do 12 of them make in all? =
  17. 17.One bag of potatoes weighs 5 kg. How many kg do 8 of them make in all? =
  18. 18.3/8 × 3/4 =
  19. 19.5.4 ÷ 0.6 =
  20. 20.2/5 ÷ 5/7 =
  21. 21.One bag of potatoes weighs 6 kg. How many kg do 11 of them make in all? =
  22. 22.5/6 × 2/5 =
  23. 23.One bottle of oil holds 8.5 L. How many L do 2 of them make in all? =
  24. 24.2.6 × 0.8 =
  25. 25.6.2 × 0.9 =
  26. 26.59.28 ÷ 8 =
  27. 27.5/6 × 1/3 =
  28. 28.5/6 × 2/3 =
  29. 29.One roll of ribbon has 9.1 m. How many m do 5 of them make in all? =
  30. 30.4/7 × 1/2 =
  31. 31.1/4 × 3/7 =
  32. 32.1/7 × 1/9 =
  33. 33.1/6 × 3/5 =
  34. 34.1/8 × 4/5 =
  35. 35.2/9 ÷ 1/4 =
  36. 36.7/9 ÷ 2/7 =
  37. 37.One bottle of oil holds 5.9 L. How many L do 2 of them make in all? =
  38. 38.2/9 × 3/5 =
  39. 39.34.84 ÷ 4 =
  40. 40.45.6 ÷ 5 =

Answer key

  1. 10
  2. 44.5
  3. 2.82
  4. 2.4
  5. 30
  6. 63
  7. 6.16
  8. 2
  9. 25/63
  10. 44.8
  11. 2/3
  12. 61.2
  13. 1/2
  14. 2.88
  15. 9.71
  16. 57.6
  17. 40
  18. 9/32
  19. 9
  20. 14/25
  21. 66
  22. 1/3
  23. 17
  24. 2.08
  25. 5.58
  26. 7.41
  27. 5/18
  28. 5/9
  29. 45.5
  30. 2/7
  31. 3/28
  32. 1/63
  33. 1/10
  34. 1/10
  35. 8/9
  36. 49/18
  37. 11.8
  38. 2/15
  39. 8.71
  40. 9.12

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