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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 15 · 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. 1.8 ÷ 0.8 =
  2. 2.1/4 × 8 =
  3. 3.0.4 ÷ 0.2 =
  4. 4.One jug of milk holds 4.5 L. How many L do 3 of them make in all? =
  5. 5.54.64 ÷ 8 =
  6. 6.8.1 × 0.8 =
  7. 7.3/5 ÷ 7/8 =
  8. 8.7/8 × 5/6 =
  9. 9.One packet of rice weighs 4.6 kg. How many kg do 5 of them make in all? =
  10. 10.5.5 ÷ 0.5 =
  11. 11.0.8 × 0.9 =
  12. 12.20.95 ÷ 5 =
  13. 13.5/6 × 4/9 =
  14. 14.9.9 × 0.7 =
  15. 15.43.36 ÷ 8 =
  16. 16.One packet of rice weighs 7.3 kg. How many kg do 12 of them make in all? =
  17. 17.1/8 × 1/3 =
  18. 18.6.9 × 0.2 =
  19. 19.7.2 ÷ 0.8 =
  20. 20.1/6 × 7 =
  21. 21.1/3 × 8 =
  22. 22.34.55 ÷ 5 =
  23. 23.7/9 × 3 =
  24. 24.One packet of rice weighs 2 kg. How many kg do 11 of them make in all? =
  25. 25.6.28 ÷ 4 =
  26. 26.One bottle of oil holds 4.7 L. How many L do 2 of them make in all? =
  27. 27.2/5 × 6 =
  28. 28.1.4 ÷ 0.2 =
  29. 29.1/5 × 5/6 =
  30. 30.3.2 ÷ 0.8 =
  31. 31.4/5 ÷ 1/8 =
  32. 32.1/8 ÷ 3/7 =
  33. 33.3/8 × 3 =
  34. 34.1/9 × 3 =
  35. 35.2.6 × 0.8 =
  36. 36.2/7 × 2/3 =
  37. 37.1/7 × 6 =
  38. 38.One jug of milk holds 8.6 L. How many L do 7 of them make in all? =
  39. 39.1/4 ÷ 5/8 =
  40. 40.5/8 ÷ 5/8 =

Answer key

  1. 10
  2. 2
  3. 2
  4. 13.5
  5. 6.83
  6. 6.48
  7. 24/35
  8. 35/48
  9. 23
  10. 11
  11. 0.72
  12. 4.19
  13. 10/27
  14. 6.93
  15. 5.42
  16. 87.6
  17. 1/24
  18. 1.38
  19. 9
  20. 7/6
  21. 8/3
  22. 6.91
  23. 7/3
  24. 22
  25. 1.57
  26. 9.4
  27. 12/5
  28. 7
  29. 1/6
  30. 4
  31. 32/5
  32. 7/24
  33. 9/8
  34. 1/3
  35. 2.08
  36. 4/21
  37. 6/7
  38. 60.2
  39. 2/5
  40. 1

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