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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 521 · 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. 1.6/7 × 5/9 =
  2. 2.1/3 × 15 =
  3. 3.1.8 ÷ 0.2 =
  4. 4.2.4 ÷ 0.8 =
  5. 5.4 ÷ 0.5 =
  6. 6.1/6 × 12 =
  7. 7.4/5 × 12 =
  8. 8.1/7 × 4 =
  9. 9.9.4 × 0.7 =
  10. 10.3/4 × 2 =
  11. 11.32.45 ÷ 5 =
  12. 12.One bottle of oil holds 7.1 L. How many L do 4 of them make in all? =
  13. 13.25.8 ÷ 4 =
  14. 14.3.6 ÷ 8 =
  15. 15.3/5 ÷ 2/5 =
  16. 16.1/2 × 1/4 =
  17. 17.1/7 × 5/9 =
  18. 18.One bottle of oil holds 9.8 L. How many L do 11 of them make in all? =
  19. 19.7.2 ÷ 0.8 =
  20. 20.3/7 ÷ 3/4 =
  21. 21.4.8 ÷ 0.4 =
  22. 22.8.4 ÷ 0.7 =
  23. 23.5/6 × 4 =
  24. 24.1/4 ÷ 2/9 =
  25. 25.7/9 ÷ 2/3 =
  26. 26.15.08 ÷ 2 =
  27. 27.3.6 × 0.7 =
  28. 28.2.1 × 0.4 =
  29. 29.3/5 × 10 =
  30. 30.10.8 ÷ 0.9 =
  31. 31.1.6 × 0.3 =
  32. 32.1.6 × 0.2 =
  33. 33.4/9 ÷ 1/8 =
  34. 34.14.08 ÷ 4 =
  35. 35.0.4 × 0.6 =
  36. 36.6.8 × 0.6 =
  37. 37.78.08 ÷ 8 =
  38. 38.1.5 ÷ 0.5 =
  39. 39.7.2 ÷ 0.6 =
  40. 40.1/4 × 4/5 =

Answer key

  1. 10/21
  2. 5
  3. 9
  4. 3
  5. 8
  6. 2
  7. 48/5
  8. 4/7
  9. 6.58
  10. 3/2
  11. 6.49
  12. 28.4
  13. 6.45
  14. 0.45
  15. 3/2
  16. 1/8
  17. 5/63
  18. 107.8
  19. 9
  20. 4/7
  21. 12
  22. 12
  23. 10/3
  24. 9/8
  25. 7/6
  26. 7.54
  27. 2.52
  28. 0.84
  29. 6
  30. 12
  31. 0.48
  32. 0.32
  33. 32/9
  34. 3.52
  35. 0.24
  36. 4.08
  37. 9.76
  38. 3
  39. 12
  40. 1/5

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