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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 108 · 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. 1.1.6 ÷ 0.4 =
  2. 2.1/3 × 1/4 =
  3. 3.3/4 × 5 =
  4. 4.35.04 ÷ 4 =
  5. 5.2.9 × 0.2 =
  6. 6.1/7 × 13 =
  7. 7.76.88 ÷ 8 =
  8. 8.One packet of rice weighs 1.7 kg. How many kg do 8 of them make in all? =
  9. 9.9 ÷ 0.9 =
  10. 10.2.7 ÷ 0.9 =
  11. 11.4/7 × 7/9 =
  12. 12.8/9 × 1/7 =
  13. 13.One roll of ribbon has 4.3 m. How many m do 7 of them make in all? =
  14. 14.0.7 × 0.5 =
  15. 15.5/6 ÷ 1/4 =
  16. 16.2.4 ÷ 0.2 =
  17. 17.1/6 × 10 =
  18. 18.One packet of rice weighs 1.8 kg. How many kg do 8 of them make in all? =
  19. 19.2.4 ÷ 0.6 =
  20. 20.4/7 × 1/3 =
  21. 21.One jug of milk holds 1.3 L. How many L do 11 of them make in all? =
  22. 22.5/9 × 2/5 =
  23. 23.3 ÷ 0.5 =
  24. 24.2/9 × 3/7 =
  25. 25.5/6 × 6 =
  26. 26.4/7 × 1/2 =
  27. 27.19.14 ÷ 2 =
  28. 28.2/3 × 15 =
  29. 29.15.16 ÷ 2 =
  30. 30.3.3 ÷ 0.3 =
  31. 31.5/6 ÷ 2/5 =
  32. 32.1/5 ÷ 3/5 =
  33. 33.4.9 ÷ 0.7 =
  34. 34.2/9 × 2/9 =
  35. 35.One bottle of oil holds 3.8 L. How many L do 4 of them make in all? =
  36. 36.One bottle of oil holds 4.8 L. How many L do 11 of them make in all? =
  37. 37.9.9 × 0.7 =
  38. 38.5.7 × 0.2 =
  39. 39.2 ÷ 0.2 =
  40. 40.4/5 × 8 =

Answer key

  1. 4
  2. 1/12
  3. 15/4
  4. 8.76
  5. 0.58
  6. 13/7
  7. 9.61
  8. 13.6
  9. 10
  10. 3
  11. 4/9
  12. 8/63
  13. 30.1
  14. 0.35
  15. 10/3
  16. 12
  17. 5/3
  18. 14.4
  19. 4
  20. 4/21
  21. 14.3
  22. 2/9
  23. 6
  24. 2/21
  25. 5
  26. 2/7
  27. 9.57
  28. 10
  29. 7.58
  30. 11
  31. 25/12
  32. 1/3
  33. 7
  34. 4/81
  35. 15.2
  36. 52.8
  37. 6.93
  38. 1.14
  39. 10
  40. 32/5

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