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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 413 · 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. 1.7/9 × 4/9 =
  2. 2.One bottle of oil holds 5.4 L. How many L do 7 of them make in all? =
  3. 3.6/7 × 5/7 =
  4. 4.4/9 × 5 =
  5. 5.One bag of potatoes weighs 2.4 kg. How many kg do 8 of them make in all? =
  6. 6.One roll of ribbon has 6.6 m. How many m do 8 of them make in all? =
  7. 7.3.6 ÷ 0.3 =
  8. 8.0.9 × 0.5 =
  9. 9.4/5 ÷ 1/7 =
  10. 10.10.25 ÷ 5 =
  11. 11.One jug of milk holds 7.8 L. How many L do 4 of them make in all? =
  12. 12.3.44 ÷ 8 =
  13. 13.One bottle of oil holds 3.3 L. How many L do 3 of them make in all? =
  14. 14.8.7 × 0.8 =
  15. 15.9.5 × 0.3 =
  16. 16.4.24 ÷ 2 =
  17. 17.One jug of milk holds 6.9 L. How many L do 7 of them make in all? =
  18. 18.1/3 ÷ 1/5 =
  19. 19.2.7 ÷ 0.9 =
  20. 20.1/2 ÷ 1/7 =
  21. 21.5/6 ÷ 3/4 =
  22. 22.5/9 × 13 =
  23. 23.21.52 ÷ 4 =
  24. 24.7.2 ÷ 0.9 =
  25. 25.1/5 × 3/4 =
  26. 26.36.35 ÷ 5 =
  27. 27.One bag of potatoes weighs 6.7 kg. How many kg do 7 of them make in all? =
  28. 28.3.2 ÷ 0.4 =
  29. 29.One bag of potatoes weighs 4.6 kg. How many kg do 8 of them make in all? =
  30. 30.One jug of milk holds 6.9 L. How many L do 8 of them make in all? =
  31. 31.1/6 × 1/7 =
  32. 32.1/8 × 1/9 =
  33. 33.One bag of potatoes weighs 9.1 kg. How many kg do 5 of them make in all? =
  34. 34.4/7 × 7 =
  35. 35.6.32 ÷ 8 =
  36. 36.5/8 × 11 =
  37. 37.46.95 ÷ 5 =
  38. 38.3/7 ÷ 5/6 =
  39. 39.1/9 × 13 =
  40. 40.28.45 ÷ 5 =

Answer key

  1. 28/81
  2. 37.8
  3. 30/49
  4. 20/9
  5. 19.2
  6. 52.8
  7. 12
  8. 0.45
  9. 28/5
  10. 2.05
  11. 31.2
  12. 0.43
  13. 9.9
  14. 6.96
  15. 2.85
  16. 2.12
  17. 48.3
  18. 5/3
  19. 3
  20. 7/2
  21. 10/9
  22. 65/9
  23. 5.38
  24. 8
  25. 3/20
  26. 7.27
  27. 46.9
  28. 8
  29. 36.8
  30. 55.2
  31. 1/42
  32. 1/72
  33. 45.5
  34. 4
  35. 0.79
  36. 55/8
  37. 9.39
  38. 18/35
  39. 13/9
  40. 5.69

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