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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 17 · 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. 1.0.9 × 0.5 =
  2. 2.7.7 × 0.9 =
  3. 3.5/9 × 6 =
  4. 4.3/8 × 10 =
  5. 5.4.4 × 0.3 =
  6. 6.5.4 × 0.2 =
  7. 7.2/7 ÷ 7/8 =
  8. 8.6.05 ÷ 5 =
  9. 9.0.8 ÷ 0.4 =
  10. 10.7/9 × 1/3 =
  11. 11.16.54 ÷ 2 =
  12. 12.2/9 ÷ 3/5 =
  13. 13.2/9 × 4/7 =
  14. 14.4/9 × 9 =
  15. 15.2.7 ÷ 0.3 =
  16. 16.6.36 ÷ 4 =
  17. 17.2.5 ÷ 0.5 =
  18. 18.1 ÷ 0.5 =
  19. 19.One roll of ribbon has 3.3 m. How many m do 2 of them make in all? =
  20. 20.5/9 × 13 =
  21. 21.One bottle of oil holds 9.8 L. How many L do 2 of them make in all? =
  22. 22.2/7 × 4/5 =
  23. 23.2.8 × 0.8 =
  24. 24.One packet of rice weighs 4.5 kg. How many kg do 7 of them make in all? =
  25. 25.11.54 ÷ 2 =
  26. 26.1/6 × 5/8 =
  27. 27.2.4 ÷ 0.3 =
  28. 28.7/8 × 12 =
  29. 29.18.64 ÷ 8 =
  30. 30.6.5 × 0.2 =
  31. 31.5/8 ÷ 1/3 =
  32. 32.5.6 × 0.6 =
  33. 33.6 ÷ 0.5 =
  34. 34.1/7 × 14 =
  35. 35.4.2 ÷ 0.7 =
  36. 36.5/8 × 3 =
  37. 37.5.8 × 0.2 =
  38. 38.14.12 ÷ 2 =
  39. 39.3.2 × 0.6 =
  40. 40.8.2 × 0.7 =

Answer key

  1. 0.45
  2. 6.93
  3. 10/3
  4. 15/4
  5. 1.32
  6. 1.08
  7. 16/49
  8. 1.21
  9. 2
  10. 7/27
  11. 8.27
  12. 10/27
  13. 8/63
  14. 4
  15. 9
  16. 1.59
  17. 5
  18. 2
  19. 6.6
  20. 65/9
  21. 19.6
  22. 8/35
  23. 2.24
  24. 31.5
  25. 5.77
  26. 5/48
  27. 8
  28. 21/2
  29. 2.33
  30. 1.3
  31. 15/8
  32. 3.36
  33. 12
  34. 2
  35. 6
  36. 15/8
  37. 1.16
  38. 7.06
  39. 1.92
  40. 5.74

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