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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 424 · 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 jug of milk holds 8.6 L. How many L do 10 of them make in all? =
  2. 2.8.9 × 0.2 =
  3. 3.9.65 ÷ 5 =
  4. 4.1/2 × 1/6 =
  5. 5.4/5 ÷ 4/5 =
  6. 6.1/6 ÷ 1/7 =
  7. 7.One roll of ribbon has 5.8 m. How many m do 3 of them make in all? =
  8. 8.2/9 × 10 =
  9. 9.One bag of potatoes weighs 6.9 kg. How many kg do 5 of them make in all? =
  10. 10.3/8 × 4/5 =
  11. 11.12.96 ÷ 4 =
  12. 12.40.15 ÷ 5 =
  13. 13.1.3 ÷ 2 =
  14. 14.5/9 × 6 =
  15. 15.4/7 × 3 =
  16. 16.2/3 × 2/5 =
  17. 17.6/7 × 12 =
  18. 18.3 ÷ 0.5 =
  19. 19.1.8 ÷ 0.2 =
  20. 20.19.78 ÷ 2 =
  21. 21.One bottle of oil holds 9.2 L. How many L do 7 of them make in all? =
  22. 22.1/6 ÷ 2/7 =
  23. 23.9 ÷ 0.9 =
  24. 24.One bottle of oil holds 3.5 L. How many L do 8 of them make in all? =
  25. 25.1/6 × 3/5 =
  26. 26.4/9 × 8 =
  27. 27.5.6 × 0.2 =
  28. 28.0.2 × 0.4 =
  29. 29.35.04 ÷ 8 =
  30. 30.4/7 × 10 =
  31. 31.8.36 ÷ 2 =
  32. 32.1/8 ÷ 1/2 =
  33. 33.1/6 × 14 =
  34. 34.2.8 ÷ 0.4 =
  35. 35.5/9 × 7/9 =
  36. 36.9.9 × 0.9 =
  37. 37.5/6 × 8/9 =
  38. 38.25.12 ÷ 4 =
  39. 39.4/9 ÷ 1/6 =
  40. 40.5.5 × 0.8 =

Answer key

  1. 86
  2. 1.78
  3. 1.93
  4. 1/12
  5. 1
  6. 7/6
  7. 17.4
  8. 20/9
  9. 34.5
  10. 3/10
  11. 3.24
  12. 8.03
  13. 0.65
  14. 10/3
  15. 12/7
  16. 4/15
  17. 72/7
  18. 6
  19. 9
  20. 9.89
  21. 64.4
  22. 7/12
  23. 10
  24. 28
  25. 1/10
  26. 32/9
  27. 1.12
  28. 0.08
  29. 4.38
  30. 40/7
  31. 4.18
  32. 1/4
  33. 7/3
  34. 7
  35. 35/81
  36. 8.91
  37. 20/27
  38. 6.28
  39. 8/3
  40. 4.4

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