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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 458 · 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. 1.2.5 × 0.9 =
  2. 2.2/9 × 3/4 =
  3. 3.3.6 ÷ 0.3 =
  4. 4.3.5 ÷ 0.7 =
  5. 5.1/6 × 3 =
  6. 6.3/8 × 1/6 =
  7. 7.3/7 × 7/8 =
  8. 8.1.8 ÷ 0.6 =
  9. 9.3/7 × 2 =
  10. 10.One roll of ribbon has 1.6 m. How many m do 2 of them make in all? =
  11. 11.3/7 × 14 =
  12. 12.2/5 × 12 =
  13. 13.5/9 × 12 =
  14. 14.8.9 × 0.6 =
  15. 15.1/5 ÷ 1/5 =
  16. 16.0.5 × 0.4 =
  17. 17.32.9 ÷ 5 =
  18. 18.3.4 × 0.2 =
  19. 19.2/7 × 1/5 =
  20. 20.One packet of rice weighs 3.7 kg. How many kg do 10 of them make in all? =
  21. 21.3/4 × 10 =
  22. 22.41.5 ÷ 5 =
  23. 23.1/5 × 10 =
  24. 24.5.66 ÷ 2 =
  25. 25.One packet of rice weighs 4.1 kg. How many kg do 8 of them make in all? =
  26. 26.1.2 ÷ 0.6 =
  27. 27.7.1 × 0.3 =
  28. 28.1.5 ÷ 0.3 =
  29. 29.One jug of milk holds 7 L. How many L do 11 of them make in all? =
  30. 30.4.4 × 0.9 =
  31. 31.2/3 ÷ 4/7 =
  32. 32.3/7 × 10 =
  33. 33.1/4 × 6 =
  34. 34.3/5 × 8/9 =
  35. 35.One bag of potatoes weighs 9.9 kg. How many kg do 7 of them make in all? =
  36. 36.One bottle of oil holds 8.7 L. How many L do 3 of them make in all? =
  37. 37.3/7 × 9 =
  38. 38.2.5 × 0.8 =
  39. 39.25.64 ÷ 4 =
  40. 40.2.4 × 0.4 =

Answer key

  1. 2.25
  2. 1/6
  3. 12
  4. 5
  5. 1/2
  6. 1/16
  7. 3/8
  8. 3
  9. 6/7
  10. 3.2
  11. 6
  12. 24/5
  13. 20/3
  14. 5.34
  15. 1
  16. 0.2
  17. 6.58
  18. 0.68
  19. 2/35
  20. 37
  21. 15/2
  22. 8.3
  23. 2
  24. 2.83
  25. 32.8
  26. 2
  27. 2.13
  28. 5
  29. 77
  30. 3.96
  31. 7/6
  32. 30/7
  33. 3/2
  34. 8/15
  35. 69.3
  36. 26.1
  37. 27/7
  38. 2
  39. 6.41
  40. 0.96

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