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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 311 · 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. 1.25 ÷ 4 =
  2. 2.One jug of milk holds 2.8 L. How many L do 4 of them make in all? =
  3. 3.1.5 ÷ 0.3 =
  4. 4.One bottle of oil holds 3.8 L. How many L do 12 of them make in all? =
  5. 5.51.12 ÷ 8 =
  6. 6.57.92 ÷ 8 =
  7. 7.2 ÷ 0.5 =
  8. 8.7/8 ÷ 3/5 =
  9. 9.1/4 × 15 =
  10. 10.6.9 × 0.6 =
  11. 11.2.1 × 0.9 =
  12. 12.6/7 × 14 =
  13. 13.1/8 ÷ 3/5 =
  14. 14.1/7 × 9 =
  15. 15.One packet of rice weighs 8.2 kg. How many kg do 11 of them make in all? =
  16. 16.2/9 × 3/4 =
  17. 17.1/3 × 13 =
  18. 18.10.45 ÷ 5 =
  19. 19.1/6 ÷ 5/9 =
  20. 20.8.2 × 0.7 =
  21. 21.2/5 × 1/6 =
  22. 22.6/7 ÷ 5/7 =
  23. 23.17.1 ÷ 2 =
  24. 24.5/8 ÷ 5/9 =
  25. 25.1.48 ÷ 2 =
  26. 26.3/5 × 8 =
  27. 27.8.8 ÷ 0.8 =
  28. 28.5/9 ÷ 2/7 =
  29. 29.0.8 ÷ 0.2 =
  30. 30.One bottle of oil holds 8.5 L. How many L do 8 of them make in all? =
  31. 31.One bottle of oil holds 8.7 L. How many L do 8 of them make in all? =
  32. 32.4/9 ÷ 1/4 =
  33. 33.3/5 × 1/6 =
  34. 34.3.7 × 0.9 =
  35. 35.4.65 ÷ 5 =
  36. 36.5.4 × 0.2 =
  37. 37.1/2 × 11 =
  38. 38.One roll of ribbon has 2.3 m. How many m do 11 of them make in all? =
  39. 39.5.6 ÷ 0.7 =
  40. 40.1/8 ÷ 2/7 =

Answer key

  1. 6.25
  2. 11.2
  3. 5
  4. 45.6
  5. 6.39
  6. 7.24
  7. 4
  8. 35/24
  9. 15/4
  10. 4.14
  11. 1.89
  12. 12
  13. 5/24
  14. 9/7
  15. 90.2
  16. 1/6
  17. 13/3
  18. 2.09
  19. 3/10
  20. 5.74
  21. 1/15
  22. 6/5
  23. 8.55
  24. 9/8
  25. 0.74
  26. 24/5
  27. 11
  28. 35/18
  29. 4
  30. 68
  31. 69.6
  32. 16/9
  33. 1/10
  34. 3.33
  35. 0.93
  36. 1.08
  37. 11/2
  38. 25.3
  39. 8
  40. 7/16

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