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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 315 · 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. 1.4.8 × 0.7 =
  2. 2.One roll of ribbon has 1.5 m. How many m do 6 of them make in all? =
  3. 3.2/9 × 3/5 =
  4. 4.1/3 × 1/9 =
  5. 5.71.04 ÷ 8 =
  6. 6.1.9 × 0.5 =
  7. 7.1/2 ÷ 2/9 =
  8. 8.1/5 ÷ 7/9 =
  9. 9.3.1 × 0.7 =
  10. 10.7/9 ÷ 5/6 =
  11. 11.3.18 ÷ 2 =
  12. 12.1/9 ÷ 7/8 =
  13. 13.2/9 × 8 =
  14. 14.6/7 ÷ 5/7 =
  15. 15.1.3 × 0.7 =
  16. 16.7/8 × 1/5 =
  17. 17.2.8 ÷ 0.7 =
  18. 18.35 ÷ 5 =
  19. 19.3/8 ÷ 1/4 =
  20. 20.2/9 × 10 =
  21. 21.3.5 ÷ 0.5 =
  22. 22.30.68 ÷ 4 =
  23. 23.One bag of potatoes weighs 2.2 kg. How many kg do 6 of them make in all? =
  24. 24.1/9 ÷ 5/6 =
  25. 25.One packet of rice weighs 8.1 kg. How many kg do 6 of them make in all? =
  26. 26.One roll of ribbon has 7.7 m. How many m do 8 of them make in all? =
  27. 27.14.78 ÷ 2 =
  28. 28.1.6 × 0.2 =
  29. 29.1/8 ÷ 1/2 =
  30. 30.5/6 ÷ 2/5 =
  31. 31.3.2 ÷ 0.4 =
  32. 32.7/9 × 5/9 =
  33. 33.2.5 ÷ 0.5 =
  34. 34.1/3 × 6 =
  35. 35.One packet of rice weighs 7.3 kg. How many kg do 11 of them make in all? =
  36. 36.8.5 × 0.6 =
  37. 37.1/8 ÷ 1/9 =
  38. 38.2.8 ÷ 4 =
  39. 39.One packet of rice weighs 6.6 kg. How many kg do 9 of them make in all? =
  40. 40.8.2 × 0.2 =

Answer key

  1. 3.36
  2. 9
  3. 2/15
  4. 1/27
  5. 8.88
  6. 0.95
  7. 9/4
  8. 9/35
  9. 2.17
  10. 14/15
  11. 1.59
  12. 8/63
  13. 16/9
  14. 6/5
  15. 0.91
  16. 7/40
  17. 4
  18. 7
  19. 3/2
  20. 20/9
  21. 7
  22. 7.67
  23. 13.2
  24. 2/15
  25. 48.6
  26. 61.6
  27. 7.39
  28. 0.32
  29. 1/4
  30. 25/12
  31. 8
  32. 35/81
  33. 5
  34. 2
  35. 80.3
  36. 5.1
  37. 9/8
  38. 0.7
  39. 59.4
  40. 1.64

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