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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 44 · 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.One bottle of oil holds 5 L. How many L do 10 of them make in all? =
  2. 2.5/6 × 2/7 =
  3. 3.2.5 ÷ 0.5 =
  4. 4.4/9 × 2 =
  5. 5.One bottle of oil holds 1.4 L. How many L do 9 of them make in all? =
  6. 6.2/9 × 8/9 =
  7. 7.0.86 ÷ 2 =
  8. 8.1.7 × 0.5 =
  9. 9.One bag of potatoes weighs 9.3 kg. How many kg do 2 of them make in all? =
  10. 10.5/9 × 2 =
  11. 11.5/6 × 13 =
  12. 12.3/4 × 3/5 =
  13. 13.3.9 × 0.8 =
  14. 14.1/5 × 3/4 =
  15. 15.9 ÷ 0.9 =
  16. 16.1/8 × 2 =
  17. 17.1.8 ÷ 0.6 =
  18. 18.4/5 ÷ 1/2 =
  19. 19.4/9 × 1/2 =
  20. 20.5.36 ÷ 2 =
  21. 21.1/4 ÷ 1/5 =
  22. 22.2.2 × 0.9 =
  23. 23.0.5 × 0.8 =
  24. 24.One bag of potatoes weighs 1.9 kg. How many kg do 10 of them make in all? =
  25. 25.2/3 × 2 =
  26. 26.5/6 × 5/7 =
  27. 27.5/9 × 4/9 =
  28. 28.3/4 ÷ 1/4 =
  29. 29.One roll of ribbon has 2.8 m. How many m do 2 of them make in all? =
  30. 30.9.52 ÷ 4 =
  31. 31.8.2 × 0.9 =
  32. 32.2/7 × 14 =
  33. 33.7.9 × 0.5 =
  34. 34.1/3 × 13 =
  35. 35.4.9 ÷ 0.7 =
  36. 36.1/5 × 1/4 =
  37. 37.7/9 × 2/3 =
  38. 38.5/6 ÷ 7/8 =
  39. 39.1/5 × 2/3 =
  40. 40.One bottle of oil holds 4 L. How many L do 5 of them make in all? =

Answer key

  1. 50
  2. 5/21
  3. 5
  4. 8/9
  5. 12.6
  6. 16/81
  7. 0.43
  8. 0.85
  9. 18.6
  10. 10/9
  11. 65/6
  12. 9/20
  13. 3.12
  14. 3/20
  15. 10
  16. 1/4
  17. 3
  18. 8/5
  19. 2/9
  20. 2.68
  21. 5/4
  22. 1.98
  23. 0.4
  24. 19
  25. 4/3
  26. 25/42
  27. 20/81
  28. 3
  29. 5.6
  30. 2.38
  31. 7.38
  32. 4
  33. 3.95
  34. 13/3
  35. 7
  36. 1/20
  37. 14/27
  38. 20/21
  39. 2/15
  40. 20

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