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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 284 · 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. 1.1.3 × 0.4 =
  2. 2.1/3 × 2 =
  3. 3.3.6 ÷ 0.4 =
  4. 4.1/9 ÷ 4/9 =
  5. 5.1.2 × 0.7 =
  6. 6.2/3 × 1/3 =
  7. 7.4/9 × 15 =
  8. 8.1/8 × 13 =
  9. 9.39.28 ÷ 8 =
  10. 10.0.4 × 0.3 =
  11. 11.4/9 × 4/9 =
  12. 12.3/8 ÷ 1/4 =
  13. 13.9.9 ÷ 0.9 =
  14. 14.1.68 ÷ 8 =
  15. 15.1.8 ÷ 0.2 =
  16. 16.One packet of rice weighs 2.7 kg. How many kg do 4 of them make in all? =
  17. 17.5/8 × 8 =
  18. 18.35.52 ÷ 4 =
  19. 19.8.5 × 0.6 =
  20. 20.One roll of ribbon has 7.7 m. How many m do 4 of them make in all? =
  21. 21.8.8 × 0.6 =
  22. 22.One roll of ribbon has 6.6 m. How many m do 4 of them make in all? =
  23. 23.5.4 × 0.4 =
  24. 24.3 ÷ 0.5 =
  25. 25.1/2 × 4 =
  26. 26.4/9 × 13 =
  27. 27.9.4 × 0.9 =
  28. 28.One jug of milk holds 7.5 L. How many L do 12 of them make in all? =
  29. 29.One jug of milk holds 3.5 L. How many L do 11 of them make in all? =
  30. 30.3.6 ÷ 0.3 =
  31. 31.5/9 ÷ 1/6 =
  32. 32.1/3 × 12 =
  33. 33.2/9 × 2/5 =
  34. 34.One bottle of oil holds 3.9 L. How many L do 4 of them make in all? =
  35. 35.5/9 ÷ 1/3 =
  36. 36.5/8 × 4 =
  37. 37.7/9 ÷ 5/6 =
  38. 38.7.8 × 0.5 =
  39. 39.17.42 ÷ 2 =
  40. 40.5/7 × 1/3 =

Answer key

  1. 0.52
  2. 2/3
  3. 9
  4. 1/4
  5. 0.84
  6. 2/9
  7. 20/3
  8. 13/8
  9. 4.91
  10. 0.12
  11. 16/81
  12. 3/2
  13. 11
  14. 0.21
  15. 9
  16. 10.8
  17. 5
  18. 8.88
  19. 5.1
  20. 30.8
  21. 5.28
  22. 26.4
  23. 2.16
  24. 6
  25. 2
  26. 52/9
  27. 8.46
  28. 90
  29. 38.5
  30. 12
  31. 10/3
  32. 4
  33. 4/45
  34. 15.6
  35. 5/3
  36. 5/2
  37. 14/15
  38. 3.9
  39. 8.71
  40. 5/21

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