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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 507 · 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. 1.3/4 × 10 =
  2. 2.24.72 ÷ 8 =
  3. 3.2/9 ÷ 8/9 =
  4. 4.8 ÷ 0.8 =
  5. 5.4/5 × 9 =
  6. 6.0.8 ÷ 0.2 =
  7. 7.5/8 × 3/4 =
  8. 8.2/5 × 1/6 =
  9. 9.5.6 ÷ 0.7 =
  10. 10.2.4 ÷ 0.8 =
  11. 11.29.4 ÷ 5 =
  12. 12.19.28 ÷ 2 =
  13. 13.5.6 × 0.4 =
  14. 14.1/3 × 1/6 =
  15. 15.9.8 × 0.5 =
  16. 16.4/9 × 3/8 =
  17. 17.32.1 ÷ 5 =
  18. 18.9.9 × 0.8 =
  19. 19.2/9 ÷ 5/9 =
  20. 20.1/4 ÷ 4/9 =
  21. 21.2/3 ÷ 5/7 =
  22. 22.3/4 × 11 =
  23. 23.3/8 ÷ 7/8 =
  24. 24.2/5 × 5/8 =
  25. 25.3/8 × 14 =
  26. 26.2.4 ÷ 0.2 =
  27. 27.5/9 × 8 =
  28. 28.15.24 ÷ 2 =
  29. 29.9.3 × 0.3 =
  30. 30.One roll of ribbon has 4.7 m. How many m do 3 of them make in all? =
  31. 31.2.7 ÷ 0.9 =
  32. 32.7/9 × 1/7 =
  33. 33.1/2 × 8 =
  34. 34.4.2 ÷ 0.6 =
  35. 35.30.96 ÷ 4 =
  36. 36.6.3 ÷ 0.9 =
  37. 37.18.5 ÷ 2 =
  38. 38.3/7 ÷ 5/9 =
  39. 39.7.3 × 0.9 =
  40. 40.1/4 × 2/9 =

Answer key

  1. 15/2
  2. 3.09
  3. 1/4
  4. 10
  5. 36/5
  6. 4
  7. 15/32
  8. 1/15
  9. 8
  10. 3
  11. 5.88
  12. 9.64
  13. 2.24
  14. 1/18
  15. 4.9
  16. 1/6
  17. 6.42
  18. 7.92
  19. 2/5
  20. 9/16
  21. 14/15
  22. 33/4
  23. 3/7
  24. 1/4
  25. 21/4
  26. 12
  27. 40/9
  28. 7.62
  29. 2.79
  30. 14.1
  31. 3
  32. 1/9
  33. 4
  34. 7
  35. 7.74
  36. 7
  37. 9.25
  38. 27/35
  39. 6.57
  40. 1/18

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