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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 463 · 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. 1.70.88 ÷ 8 =
  2. 2.5/7 × 5/8 =
  3. 3.6/7 × 1/3 =
  4. 4.2/5 × 7/9 =
  5. 5.2/9 ÷ 2/9 =
  6. 6.One packet of rice weighs 2.5 kg. How many kg do 12 of them make in all? =
  7. 7.6.6 ÷ 0.6 =
  8. 8.1.4 ÷ 0.7 =
  9. 9.One bottle of oil holds 3.6 L. How many L do 9 of them make in all? =
  10. 10.0.3 × 0.3 =
  11. 11.3/5 × 8/9 =
  12. 12.6/7 × 4/9 =
  13. 13.1/3 × 14 =
  14. 14.4/7 × 4/7 =
  15. 15.2/5 × 4/5 =
  16. 16.5/7 × 3/8 =
  17. 17.One bottle of oil holds 2.2 L. How many L do 9 of them make in all? =
  18. 18.2/9 × 3 =
  19. 19.2.9 × 0.9 =
  20. 20.5.9 × 0.3 =
  21. 21.4.1 × 0.2 =
  22. 22.0.6 ÷ 0.2 =
  23. 23.1.8 ÷ 0.9 =
  24. 24.1/2 × 1/3 =
  25. 25.1/2 × 3 =
  26. 26.3.6 ÷ 0.3 =
  27. 27.7.72 ÷ 4 =
  28. 28.One roll of ribbon has 6 m. How many m do 9 of them make in all? =
  29. 29.0.4 × 0.6 =
  30. 30.4/5 × 5/6 =
  31. 31.One roll of ribbon has 2.2 m. How many m do 10 of them make in all? =
  32. 32.7/9 × 2/9 =
  33. 33.2/3 × 1/6 =
  34. 34.1 ÷ 0.2 =
  35. 35.One bottle of oil holds 5.8 L. How many L do 10 of them make in all? =
  36. 36.3/5 ÷ 1/4 =
  37. 37.8.75 ÷ 5 =
  38. 38.4/7 ÷ 2/3 =
  39. 39.1.1 × 0.2 =
  40. 40.5.6 × 0.7 =

Answer key

  1. 8.86
  2. 25/56
  3. 2/7
  4. 14/45
  5. 1
  6. 30
  7. 11
  8. 2
  9. 32.4
  10. 0.09
  11. 8/15
  12. 8/21
  13. 14/3
  14. 16/49
  15. 8/25
  16. 15/56
  17. 19.8
  18. 2/3
  19. 2.61
  20. 1.77
  21. 0.82
  22. 3
  23. 2
  24. 1/6
  25. 3/2
  26. 12
  27. 1.93
  28. 54
  29. 0.24
  30. 2/3
  31. 22
  32. 14/81
  33. 1/9
  34. 5
  35. 58
  36. 12/5
  37. 1.75
  38. 6/7
  39. 0.22
  40. 3.92

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