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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 39 · 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 bag of potatoes weighs 2.7 kg. How many kg do 3 of them make in all? =
  2. 2.4/9 × 12 =
  3. 3.1.8 × 0.9 =
  4. 4.1/5 × 8 =
  5. 5.One packet of rice weighs 3.7 kg. How many kg do 6 of them make in all? =
  6. 6.1/5 × 8/9 =
  7. 7.One bag of potatoes weighs 5.3 kg. How many kg do 5 of them make in all? =
  8. 8.2/9 ÷ 1/2 =
  9. 9.5.1 × 0.8 =
  10. 10.14.52 ÷ 4 =
  11. 11.2/9 × 6/7 =
  12. 12.1/4 × 12 =
  13. 13.3/5 × 9 =
  14. 14.1/3 × 3/8 =
  15. 15.3.2 ÷ 0.4 =
  16. 16.One bag of potatoes weighs 2 kg. How many kg do 12 of them make in all? =
  17. 17.6 ÷ 0.5 =
  18. 18.17.32 ÷ 4 =
  19. 19.One jug of milk holds 8.8 L. How many L do 10 of them make in all? =
  20. 20.One jug of milk holds 3.9 L. How many L do 5 of them make in all? =
  21. 21.5/8 ÷ 3/5 =
  22. 22.0.6 ÷ 0.3 =
  23. 23.6.7 × 0.4 =
  24. 24.0.3 × 0.8 =
  25. 25.5/7 ÷ 5/9 =
  26. 26.2/7 × 15 =
  27. 27.1/6 × 4 =
  28. 28.2/3 × 4 =
  29. 29.7/8 ÷ 1/6 =
  30. 30.38.9 ÷ 5 =
  31. 31.3/8 × 3 =
  32. 32.5/7 ÷ 4/5 =
  33. 33.0.3 × 0.9 =
  34. 34.7.2 ÷ 0.8 =
  35. 35.6.65 ÷ 5 =
  36. 36.6.05 ÷ 5 =
  37. 37.1/5 × 3 =
  38. 38.4/5 ÷ 2/9 =
  39. 39.1/7 × 6/7 =
  40. 40.9.3 × 0.2 =

Answer key

  1. 8.1
  2. 16/3
  3. 1.62
  4. 8/5
  5. 22.2
  6. 8/45
  7. 26.5
  8. 4/9
  9. 4.08
  10. 3.63
  11. 4/21
  12. 3
  13. 27/5
  14. 1/8
  15. 8
  16. 24
  17. 12
  18. 4.33
  19. 88
  20. 19.5
  21. 25/24
  22. 2
  23. 2.68
  24. 0.24
  25. 9/7
  26. 30/7
  27. 2/3
  28. 8/3
  29. 21/4
  30. 7.78
  31. 9/8
  32. 25/28
  33. 0.27
  34. 9
  35. 1.33
  36. 1.21
  37. 3/5
  38. 18/5
  39. 6/49
  40. 1.86

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