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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 115 · 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. 1.8.9 × 0.3 =
  2. 2.1/5 ÷ 3/5 =
  3. 3.1/2 × 7/8 =
  4. 4.3/4 ÷ 7/8 =
  5. 5.1.8 ÷ 0.2 =
  6. 6.8.1 ÷ 0.9 =
  7. 7.2 ÷ 0.5 =
  8. 8.1.7 ÷ 2 =
  9. 9.0.1 × 0.5 =
  10. 10.2.7 × 0.3 =
  11. 11.4.6 × 0.5 =
  12. 12.9.24 ÷ 4 =
  13. 13.1/4 × 5 =
  14. 14.4/9 × 3/4 =
  15. 15.6 ÷ 0.5 =
  16. 16.7/8 × 3 =
  17. 17.2.56 ÷ 8 =
  18. 18.3/8 × 1/8 =
  19. 19.3/4 × 8 =
  20. 20.4.7 × 0.2 =
  21. 21.7.68 ÷ 8 =
  22. 22.One bottle of oil holds 2.3 L. How many L do 8 of them make in all? =
  23. 23.6/7 ÷ 3/8 =
  24. 24.2/7 × 1/4 =
  25. 25.3/8 × 5/6 =
  26. 26.2.4 ÷ 0.6 =
  27. 27.1.7 × 0.2 =
  28. 28.2/9 ÷ 5/9 =
  29. 29.5/7 × 4 =
  30. 30.1/7 × 6/7 =
  31. 31.67.84 ÷ 8 =
  32. 32.5/7 × 6/7 =
  33. 33.4/7 ÷ 7/8 =
  34. 34.30.32 ÷ 8 =
  35. 35.1/4 × 5/7 =
  36. 36.1/6 × 2 =
  37. 37.2.5 ÷ 0.5 =
  38. 38.2/7 × 7 =
  39. 39.1/7 × 3 =
  40. 40.4/9 × 2/5 =

Answer key

  1. 2.67
  2. 1/3
  3. 7/16
  4. 6/7
  5. 9
  6. 9
  7. 4
  8. 0.85
  9. 0.05
  10. 0.81
  11. 2.3
  12. 2.31
  13. 5/4
  14. 1/3
  15. 12
  16. 21/8
  17. 0.32
  18. 3/64
  19. 6
  20. 0.94
  21. 0.96
  22. 18.4
  23. 16/7
  24. 1/14
  25. 5/16
  26. 4
  27. 0.34
  28. 2/5
  29. 20/7
  30. 6/49
  31. 8.48
  32. 30/49
  33. 32/49
  34. 3.79
  35. 5/28
  36. 1/3
  37. 5
  38. 2
  39. 3/7
  40. 8/45

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