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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 393 · 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. 1.3/4 × 8/9 =
  2. 2.1.5 ÷ 0.5 =
  3. 3.22.6 ÷ 5 =
  4. 4.2/7 × 10 =
  5. 5.One roll of ribbon has 9.8 m. How many m do 4 of them make in all? =
  6. 6.7/9 × 1/2 =
  7. 7.1.5 ÷ 0.3 =
  8. 8.3/5 × 3/8 =
  9. 9.1/6 × 2/3 =
  10. 10.1.2 ÷ 0.3 =
  11. 11.4/5 ÷ 4/9 =
  12. 12.3/8 × 1/3 =
  13. 13.9.9 ÷ 0.9 =
  14. 14.9 ÷ 5 =
  15. 15.2/5 ÷ 4/7 =
  16. 16.3/7 ÷ 3/7 =
  17. 17.1 ÷ 0.5 =
  18. 18.One roll of ribbon has 2.5 m. How many m do 3 of them make in all? =
  19. 19.1.3 × 0.6 =
  20. 20.7/8 × 1/2 =
  21. 21.6/7 ÷ 1/8 =
  22. 22.5/6 × 3 =
  23. 23.3.1 × 0.6 =
  24. 24.One bag of potatoes weighs 5.1 kg. How many kg do 6 of them make in all? =
  25. 25.12.24 ÷ 8 =
  26. 26.13.95 ÷ 5 =
  27. 27.8/9 ÷ 8/9 =
  28. 28.2.8 ÷ 0.7 =
  29. 29.One packet of rice weighs 5.2 kg. How many kg do 9 of them make in all? =
  30. 30.2.7 ÷ 0.9 =
  31. 31.5/7 × 4 =
  32. 32.2/9 × 1/5 =
  33. 33.16.66 ÷ 2 =
  34. 34.One bag of potatoes weighs 1.6 kg. How many kg do 6 of them make in all? =
  35. 35.2/5 ÷ 1/8 =
  36. 36.5/9 ÷ 1/7 =
  37. 37.9 ÷ 4 =
  38. 38.6/7 ÷ 7/8 =
  39. 39.2/3 × 4/5 =
  40. 40.5/9 × 4 =

Answer key

  1. 2/3
  2. 3
  3. 4.52
  4. 20/7
  5. 39.2
  6. 7/18
  7. 5
  8. 9/40
  9. 1/9
  10. 4
  11. 9/5
  12. 1/8
  13. 11
  14. 1.8
  15. 7/10
  16. 1
  17. 2
  18. 7.5
  19. 0.78
  20. 7/16
  21. 48/7
  22. 5/2
  23. 1.86
  24. 30.6
  25. 1.53
  26. 2.79
  27. 1
  28. 4
  29. 46.8
  30. 3
  31. 20/7
  32. 2/45
  33. 8.33
  34. 9.6
  35. 16/5
  36. 35/9
  37. 2.25
  38. 48/49
  39. 8/15
  40. 20/9

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