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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 91 · 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. 1.4/5 × 4/9 =
  2. 2.7/9 × 5/8 =
  3. 3.2.8 × 0.2 =
  4. 4.1/6 × 3 =
  5. 5.4/9 × 8/9 =
  6. 6.0.8 ÷ 0.2 =
  7. 7.40.05 ÷ 5 =
  8. 8.9.2 × 0.5 =
  9. 9.1/2 ÷ 1/5 =
  10. 10.3.2 ÷ 0.4 =
  11. 11.7 ÷ 0.7 =
  12. 12.2.4 ÷ 0.8 =
  13. 13.1/8 × 8 =
  14. 14.One packet of rice weighs 5.9 kg. How many kg do 7 of them make in all? =
  15. 15.7.7 ÷ 0.7 =
  16. 16.17.26 ÷ 2 =
  17. 17.9.7 × 0.4 =
  18. 18.One roll of ribbon has 6.6 m. How many m do 9 of them make in all? =
  19. 19.46.4 ÷ 8 =
  20. 20.2/9 × 1/2 =
  21. 21.7.2 ÷ 0.8 =
  22. 22.7/8 × 8/9 =
  23. 23.3/5 ÷ 2/9 =
  24. 24.0.6 ÷ 0.2 =
  25. 25.7.9 × 0.4 =
  26. 26.3.14 ÷ 2 =
  27. 27.One bottle of oil holds 8.7 L. How many L do 12 of them make in all? =
  28. 28.23.04 ÷ 8 =
  29. 29.1/9 × 4 =
  30. 30.1/5 ÷ 4/7 =
  31. 31.3/4 × 1/4 =
  32. 32.One bottle of oil holds 5 L. How many L do 9 of them make in all? =
  33. 33.5/7 ÷ 7/9 =
  34. 34.3.4 × 0.9 =
  35. 35.8/9 ÷ 5/6 =
  36. 36.4.3 × 0.5 =
  37. 37.1/7 ÷ 5/8 =
  38. 38.26.84 ÷ 4 =
  39. 39.2/3 × 4 =
  40. 40.2.1 × 0.5 =

Answer key

  1. 16/45
  2. 35/72
  3. 0.56
  4. 1/2
  5. 32/81
  6. 4
  7. 8.01
  8. 4.6
  9. 5/2
  10. 8
  11. 10
  12. 3
  13. 1
  14. 41.3
  15. 11
  16. 8.63
  17. 3.88
  18. 59.4
  19. 5.8
  20. 1/9
  21. 9
  22. 7/9
  23. 27/10
  24. 3
  25. 3.16
  26. 1.57
  27. 104.4
  28. 2.88
  29. 4/9
  30. 7/20
  31. 3/16
  32. 45
  33. 45/49
  34. 3.06
  35. 16/15
  36. 2.15
  37. 8/35
  38. 6.71
  39. 8/3
  40. 1.05

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