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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 93 · 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. 1.9.6 ÷ 0.8 =
  2. 2.1/5 × 7/8 =
  3. 3.8/9 × 5/6 =
  4. 4.One bag of potatoes weighs 8.4 kg. How many kg do 7 of them make in all? =
  5. 5.1/5 × 4 =
  6. 6.One roll of ribbon has 6.5 m. How many m do 3 of them make in all? =
  7. 7.2/5 × 10 =
  8. 8.6/7 × 6/7 =
  9. 9.3/8 ÷ 2/5 =
  10. 10.1.1 × 0.6 =
  11. 11.34.88 ÷ 8 =
  12. 12.5.3 × 0.5 =
  13. 13.One jug of milk holds 3.7 L. How many L do 3 of them make in all? =
  14. 14.1/7 × 4/9 =
  15. 15.5.4 ÷ 0.6 =
  16. 16.3.1 ÷ 2 =
  17. 17.7/9 × 4/7 =
  18. 18.1.6 ÷ 0.4 =
  19. 19.1.7 × 0.7 =
  20. 20.7/9 × 3/4 =
  21. 21.4/7 × 3/5 =
  22. 22.38.48 ÷ 4 =
  23. 23.3/5 ÷ 4/9 =
  24. 24.10.96 ÷ 2 =
  25. 25.One bag of potatoes weighs 7.4 kg. How many kg do 6 of them make in all? =
  26. 26.One bag of potatoes weighs 3.1 kg. How many kg do 3 of them make in all? =
  27. 27.3/5 ÷ 1/3 =
  28. 28.One bottle of oil holds 4.7 L. How many L do 3 of them make in all? =
  29. 29.4.4 × 0.9 =
  30. 30.0.6 × 0.7 =
  31. 31.1.2 × 0.6 =
  32. 32.One packet of rice weighs 6.7 kg. How many kg do 2 of them make in all? =
  33. 33.18.08 ÷ 2 =
  34. 34.34.16 ÷ 4 =
  35. 35.2.8 × 0.5 =
  36. 36.4.1 × 0.8 =
  37. 37.2.4 × 0.6 =
  38. 38.4/9 × 2 =
  39. 39.3/8 × 8 =
  40. 40.One bottle of oil holds 3.6 L. How many L do 5 of them make in all? =

Answer key

  1. 12
  2. 7/40
  3. 20/27
  4. 58.8
  5. 4/5
  6. 19.5
  7. 4
  8. 36/49
  9. 15/16
  10. 0.66
  11. 4.36
  12. 2.65
  13. 11.1
  14. 4/63
  15. 9
  16. 1.55
  17. 4/9
  18. 4
  19. 1.19
  20. 7/12
  21. 12/35
  22. 9.62
  23. 27/20
  24. 5.48
  25. 44.4
  26. 9.3
  27. 9/5
  28. 14.1
  29. 3.96
  30. 0.42
  31. 0.72
  32. 13.4
  33. 9.04
  34. 8.54
  35. 1.4
  36. 3.28
  37. 1.44
  38. 8/9
  39. 3
  40. 18

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