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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 147 · 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. 1.5.6 ÷ 0.8 =
  2. 2.5.6 ÷ 2 =
  3. 3.26.08 ÷ 4 =
  4. 4.7.2 ÷ 0.6 =
  5. 5.35.1 ÷ 5 =
  6. 6.0.4 ÷ 0.2 =
  7. 7.1.4 ÷ 0.2 =
  8. 8.7.7 × 0.7 =
  9. 9.3/8 × 8 =
  10. 10.4/5 × 7/9 =
  11. 11.1/3 ÷ 1/3 =
  12. 12.33.65 ÷ 5 =
  13. 13.1/9 ÷ 1/8 =
  14. 14.7/8 × 3/5 =
  15. 15.4.5 ÷ 0.9 =
  16. 16.1/4 × 7 =
  17. 17.5/7 ÷ 1/7 =
  18. 18.10.55 ÷ 5 =
  19. 19.2/5 × 12 =
  20. 20.5/8 × 4/7 =
  21. 21.2/3 ÷ 3/5 =
  22. 22.1/9 ÷ 2/5 =
  23. 23.6/7 × 8 =
  24. 24.4/5 × 10 =
  25. 25.1.2 ÷ 0.4 =
  26. 26.1.6 × 0.8 =
  27. 27.5/8 × 5/6 =
  28. 28.2.4 ÷ 0.3 =
  29. 29.1/9 × 3/7 =
  30. 30.3/7 ÷ 1/8 =
  31. 31.One bottle of oil holds 8.1 L. How many L do 12 of them make in all? =
  32. 32.One packet of rice weighs 8.6 kg. How many kg do 7 of them make in all? =
  33. 33.3.12 ÷ 2 =
  34. 34.2/7 ÷ 4/9 =
  35. 35.One packet of rice weighs 3 kg. How many kg do 3 of them make in all? =
  36. 36.1/4 ÷ 5/8 =
  37. 37.1/5 × 6/7 =
  38. 38.1.7 × 0.2 =
  39. 39.1.82 ÷ 2 =
  40. 40.3/8 × 14 =

Answer key

  1. 7
  2. 2.8
  3. 6.52
  4. 12
  5. 7.02
  6. 2
  7. 7
  8. 5.39
  9. 3
  10. 28/45
  11. 1
  12. 6.73
  13. 8/9
  14. 21/40
  15. 5
  16. 7/4
  17. 5
  18. 2.11
  19. 24/5
  20. 5/14
  21. 10/9
  22. 5/18
  23. 48/7
  24. 8
  25. 3
  26. 1.28
  27. 25/48
  28. 8
  29. 1/21
  30. 24/7
  31. 97.2
  32. 60.2
  33. 1.56
  34. 9/14
  35. 9
  36. 2/5
  37. 6/35
  38. 0.34
  39. 0.91
  40. 21/4

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