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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 75 · 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. 1.6/7 × 10 =
  2. 2.5.8 × 0.2 =
  3. 3.43.15 ÷ 5 =
  4. 4.9 ÷ 0.9 =
  5. 5.5/6 ÷ 3/4 =
  6. 6.4.1 × 0.2 =
  7. 7.One roll of ribbon has 5.4 m. How many m do 12 of them make in all? =
  8. 8.One roll of ribbon has 6.6 m. How many m do 10 of them make in all? =
  9. 9.1/7 × 9 =
  10. 10.One bottle of oil holds 4.5 L. How many L do 2 of them make in all? =
  11. 11.0.6 ÷ 0.2 =
  12. 12.2/5 × 7/9 =
  13. 13.1/9 ÷ 7/9 =
  14. 14.One jug of milk holds 7.9 L. How many L do 3 of them make in all? =
  15. 15.1.2 ÷ 0.4 =
  16. 16.48.25 ÷ 5 =
  17. 17.7.2 ÷ 0.9 =
  18. 18.4/9 × 4/5 =
  19. 19.2/9 × 4 =
  20. 20.1/2 × 8/9 =
  21. 21.3.7 × 0.6 =
  22. 22.4/7 × 13 =
  23. 23.1.6 × 0.9 =
  24. 24.33.04 ÷ 8 =
  25. 25.4/9 ÷ 1/8 =
  26. 26.1/3 × 2 =
  27. 27.8.9 × 0.9 =
  28. 28.6.9 × 0.5 =
  29. 29.18.5 ÷ 5 =
  30. 30.9.7 × 0.6 =
  31. 31.1/5 × 5/8 =
  32. 32.One packet of rice weighs 1.2 kg. How many kg do 7 of them make in all? =
  33. 33.2/9 × 2 =
  34. 34.5/7 ÷ 1/6 =
  35. 35.1/2 ÷ 1/7 =
  36. 36.One roll of ribbon has 2 m. How many m do 3 of them make in all? =
  37. 37.13.66 ÷ 2 =
  38. 38.0.6 × 0.6 =
  39. 39.1/4 × 1/4 =
  40. 40.4/9 × 4/7 =

Answer key

  1. 60/7
  2. 1.16
  3. 8.63
  4. 10
  5. 10/9
  6. 0.82
  7. 64.8
  8. 66
  9. 9/7
  10. 9
  11. 3
  12. 14/45
  13. 1/7
  14. 23.7
  15. 3
  16. 9.65
  17. 8
  18. 16/45
  19. 8/9
  20. 4/9
  21. 2.22
  22. 52/7
  23. 1.44
  24. 4.13
  25. 32/9
  26. 2/3
  27. 8.01
  28. 3.45
  29. 3.7
  30. 5.82
  31. 1/8
  32. 8.4
  33. 4/9
  34. 30/7
  35. 7/2
  36. 6
  37. 6.83
  38. 0.36
  39. 1/16
  40. 16/63

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