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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 367 · 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 packet of rice weighs 9.8 kg. How many kg do 7 of them make in all? =
  2. 2.One jug of milk holds 7.3 L. How many L do 12 of them make in all? =
  3. 3.4/9 ÷ 1/5 =
  4. 4.5/7 × 4/9 =
  5. 5.1/2 × 3/5 =
  6. 6.1.9 × 0.5 =
  7. 7.4/5 ÷ 3/4 =
  8. 8.2 ÷ 0.4 =
  9. 9.1 ÷ 2 =
  10. 10.15.15 ÷ 5 =
  11. 11.0.8 × 0.9 =
  12. 12.1/8 × 2/3 =
  13. 13.7/8 ÷ 4/7 =
  14. 14.5/7 × 12 =
  15. 15.1/2 × 3/8 =
  16. 16.2.7 ÷ 0.9 =
  17. 17.9.4 × 0.2 =
  18. 18.2/3 × 1/7 =
  19. 19.7/8 × 13 =
  20. 20.5.5 ÷ 0.5 =
  21. 21.1/3 × 1/5 =
  22. 22.1.5 ÷ 0.5 =
  23. 23.5/6 × 3 =
  24. 24.5/8 × 5 =
  25. 25.One roll of ribbon has 6.5 m. How many m do 7 of them make in all? =
  26. 26.10.8 ÷ 0.9 =
  27. 27.1/4 × 15 =
  28. 28.5/6 × 3/4 =
  29. 29.1.5 ÷ 0.3 =
  30. 30.9 ÷ 0.9 =
  31. 31.3/7 × 1/4 =
  32. 32.8/9 ÷ 2/5 =
  33. 33.2/7 × 2/9 =
  34. 34.One packet of rice weighs 1.7 kg. How many kg do 9 of them make in all? =
  35. 35.3/4 × 1/3 =
  36. 36.16.65 ÷ 5 =
  37. 37.1.28 ÷ 4 =
  38. 38.7/9 × 3 =
  39. 39.5/9 × 1/8 =
  40. 40.3/4 × 3/5 =

Answer key

  1. 68.6
  2. 87.6
  3. 20/9
  4. 20/63
  5. 3/10
  6. 0.95
  7. 16/15
  8. 5
  9. 0.5
  10. 3.03
  11. 0.72
  12. 1/12
  13. 49/32
  14. 60/7
  15. 3/16
  16. 3
  17. 1.88
  18. 2/21
  19. 91/8
  20. 11
  21. 1/15
  22. 3
  23. 5/2
  24. 25/8
  25. 45.5
  26. 12
  27. 15/4
  28. 5/8
  29. 5
  30. 10
  31. 3/28
  32. 20/9
  33. 4/63
  34. 15.3
  35. 1/4
  36. 3.33
  37. 0.32
  38. 7/3
  39. 5/72
  40. 9/20

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