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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 154 · 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. 1.3.3 × 0.7 =
  2. 2.1/7 × 5 =
  3. 3.1.4 ÷ 0.7 =
  4. 4.1.1 × 0.6 =
  5. 5.One packet of rice weighs 6.2 kg. How many kg do 11 of them make in all? =
  6. 6.10.15 ÷ 5 =
  7. 7.4/9 × 3 =
  8. 8.19.6 ÷ 8 =
  9. 9.3/5 × 5/8 =
  10. 10.5/7 × 3 =
  11. 11.6 ÷ 0.6 =
  12. 12.2/3 × 4/7 =
  13. 13.1.8 ÷ 0.2 =
  14. 14.One roll of ribbon has 4.5 m. How many m do 10 of them make in all? =
  15. 15.1/7 ÷ 1/2 =
  16. 16.47.52 ÷ 8 =
  17. 17.2/5 × 10 =
  18. 18.1/2 × 4/7 =
  19. 19.1.2 ÷ 0.2 =
  20. 20.4.92 ÷ 2 =
  21. 21.4/9 × 3/8 =
  22. 22.1/8 × 15 =
  23. 23.1/8 × 6 =
  24. 24.One packet of rice weighs 3.4 kg. How many kg do 12 of them make in all? =
  25. 25.3.6 ÷ 0.6 =
  26. 26.1.5 × 0.2 =
  27. 27.1/5 × 1/4 =
  28. 28.One jug of milk holds 5.8 L. How many L do 9 of them make in all? =
  29. 29.One packet of rice weighs 8.9 kg. How many kg do 9 of them make in all? =
  30. 30.54.72 ÷ 8 =
  31. 31.6.2 × 0.8 =
  32. 32.5/7 × 4/5 =
  33. 33.One bag of potatoes weighs 9.1 kg. How many kg do 4 of them make in all? =
  34. 34.6.5 × 0.8 =
  35. 35.3/5 ÷ 6/7 =
  36. 36.3/4 × 1/2 =
  37. 37.1/7 × 7 =
  38. 38.7/9 × 12 =
  39. 39.21.92 ÷ 8 =
  40. 40.4/7 ÷ 3/4 =

Answer key

  1. 2.31
  2. 5/7
  3. 2
  4. 0.66
  5. 68.2
  6. 2.03
  7. 4/3
  8. 2.45
  9. 3/8
  10. 15/7
  11. 10
  12. 8/21
  13. 9
  14. 45
  15. 2/7
  16. 5.94
  17. 4
  18. 2/7
  19. 6
  20. 2.46
  21. 1/6
  22. 15/8
  23. 3/4
  24. 40.8
  25. 6
  26. 0.3
  27. 1/20
  28. 52.2
  29. 80.1
  30. 6.84
  31. 4.96
  32. 4/7
  33. 36.4
  34. 5.2
  35. 7/10
  36. 3/8
  37. 1
  38. 28/3
  39. 2.74
  40. 16/21

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