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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 209 · 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. 1.1/5 × 1/2 =
  2. 2.7.7 ÷ 0.7 =
  3. 3.1/2 × 3/4 =
  4. 4.0.4 × 0.4 =
  5. 5.4 ÷ 0.5 =
  6. 6.One bag of potatoes weighs 8.8 kg. How many kg do 6 of them make in all? =
  7. 7.1/3 × 10 =
  8. 8.13.8 ÷ 4 =
  9. 9.7.9 × 0.7 =
  10. 10.9.4 × 0.9 =
  11. 11.2/7 × 2/9 =
  12. 12.5/7 × 5/6 =
  13. 13.7.5 × 0.3 =
  14. 14.One roll of ribbon has 2 m. How many m do 11 of them make in all? =
  15. 15.One jug of milk holds 1.2 L. How many L do 10 of them make in all? =
  16. 16.2/3 × 3/4 =
  17. 17.5/7 ÷ 5/9 =
  18. 18.3/4 × 5/7 =
  19. 19.One bag of potatoes weighs 1.4 kg. How many kg do 3 of them make in all? =
  20. 20.4/9 × 14 =
  21. 21.3.2 ÷ 0.4 =
  22. 22.18.84 ÷ 2 =
  23. 23.5.4 × 0.4 =
  24. 24.2/7 × 5/8 =
  25. 25.3/5 ÷ 1/2 =
  26. 26.0.8 × 0.4 =
  27. 27.2/9 × 2/9 =
  28. 28.3/4 × 3/5 =
  29. 29.1/3 × 9 =
  30. 30.1.7 × 0.4 =
  31. 31.1/9 × 10 =
  32. 32.3/8 ÷ 1/4 =
  33. 33.13.52 ÷ 4 =
  34. 34.1.2 × 0.4 =
  35. 35.3/7 ÷ 3/8 =
  36. 36.5/7 × 15 =
  37. 37.One bag of potatoes weighs 6.4 kg. How many kg do 2 of them make in all? =
  38. 38.One bottle of oil holds 3.8 L. How many L do 2 of them make in all? =
  39. 39.11.72 ÷ 4 =
  40. 40.8/9 ÷ 1/5 =

Answer key

  1. 1/10
  2. 11
  3. 3/8
  4. 0.16
  5. 8
  6. 52.8
  7. 10/3
  8. 3.45
  9. 5.53
  10. 8.46
  11. 4/63
  12. 25/42
  13. 2.25
  14. 22
  15. 12
  16. 1/2
  17. 9/7
  18. 15/28
  19. 4.2
  20. 56/9
  21. 8
  22. 9.42
  23. 2.16
  24. 5/28
  25. 6/5
  26. 0.32
  27. 4/81
  28. 9/20
  29. 3
  30. 0.68
  31. 10/9
  32. 3/2
  33. 3.38
  34. 0.48
  35. 8/7
  36. 75/7
  37. 12.8
  38. 7.6
  39. 2.93
  40. 40/9

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