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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 57 · 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. 1.1/2 × 13 =
  2. 2.1/2 × 4 =
  3. 3.40.56 ÷ 8 =
  4. 4.2/5 × 1/4 =
  5. 5.1/2 × 4/9 =
  6. 6.4/5 × 4 =
  7. 7.4.3 × 0.5 =
  8. 8.8.4 × 0.8 =
  9. 9.5.6 ÷ 0.8 =
  10. 10.2/7 × 5/8 =
  11. 11.2.9 × 0.9 =
  12. 12.3/5 × 1/8 =
  13. 13.2/3 ÷ 1/9 =
  14. 14.One bottle of oil holds 4.5 L. How many L do 12 of them make in all? =
  15. 15.2/9 × 2/7 =
  16. 16.2/7 × 2/5 =
  17. 17.1/8 ÷ 1/9 =
  18. 18.7.8 × 0.7 =
  19. 19.0.2 × 0.8 =
  20. 20.1.2 ÷ 0.2 =
  21. 21.7/9 × 12 =
  22. 22.2/5 × 2 =
  23. 23.One bag of potatoes weighs 2.3 kg. How many kg do 8 of them make in all? =
  24. 24.0.9 × 0.2 =
  25. 25.4.85 ÷ 5 =
  26. 26.8.1 ÷ 0.9 =
  27. 27.3/4 × 3/5 =
  28. 28.7/8 × 3 =
  29. 29.1/4 ÷ 1/7 =
  30. 30.One bag of potatoes weighs 9.5 kg. How many kg do 11 of them make in all? =
  31. 31.2.4 ÷ 0.6 =
  32. 32.1.6 ÷ 0.8 =
  33. 33.One packet of rice weighs 5.4 kg. How many kg do 4 of them make in all? =
  34. 34.10.8 ÷ 0.9 =
  35. 35.9.3 × 0.6 =
  36. 36.6.5 × 0.6 =
  37. 37.1/7 × 2/9 =
  38. 38.2/7 ÷ 2/3 =
  39. 39.3/5 × 11 =
  40. 40.4.9 × 0.9 =

Answer key

  1. 13/2
  2. 2
  3. 5.07
  4. 1/10
  5. 2/9
  6. 16/5
  7. 2.15
  8. 6.72
  9. 7
  10. 5/28
  11. 2.61
  12. 3/40
  13. 6
  14. 54
  15. 4/63
  16. 4/35
  17. 9/8
  18. 5.46
  19. 0.16
  20. 6
  21. 28/3
  22. 4/5
  23. 18.4
  24. 0.18
  25. 0.97
  26. 9
  27. 9/20
  28. 21/8
  29. 7/4
  30. 104.5
  31. 4
  32. 2
  33. 21.6
  34. 12
  35. 5.58
  36. 3.9
  37. 2/63
  38. 3/7
  39. 33/5
  40. 4.41

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