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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 484 · 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. 1.3.24 ÷ 4 =
  2. 2.8/9 ÷ 1/4 =
  3. 3.4/5 × 10 =
  4. 4.3/7 × 3 =
  5. 5.1/8 × 1/4 =
  6. 6.One bottle of oil holds 6.2 L. How many L do 3 of them make in all? =
  7. 7.One packet of rice weighs 9.9 kg. How many kg do 5 of them make in all? =
  8. 8.40 ÷ 5 =
  9. 9.5/9 × 1/6 =
  10. 10.One bag of potatoes weighs 6.2 kg. How many kg do 4 of them make in all? =
  11. 11.8.5 ÷ 2 =
  12. 12.38.04 ÷ 4 =
  13. 13.34.64 ÷ 4 =
  14. 14.1/4 × 15 =
  15. 15.1/3 ÷ 1/9 =
  16. 16.7/8 ÷ 1/4 =
  17. 17.2.2 ÷ 0.2 =
  18. 18.7/8 × 7 =
  19. 19.One bottle of oil holds 6.8 L. How many L do 9 of them make in all? =
  20. 20.3/5 × 8 =
  21. 21.3.2 ÷ 0.8 =
  22. 22.1/7 ÷ 2/5 =
  23. 23.10.72 ÷ 2 =
  24. 24.6/7 × 9 =
  25. 25.5.4 × 0.4 =
  26. 26.4/5 × 5/6 =
  27. 27.4 ÷ 0.5 =
  28. 28.4.85 ÷ 5 =
  29. 29.10.8 ÷ 0.9 =
  30. 30.7/9 × 6 =
  31. 31.2/5 ÷ 8/9 =
  32. 32.0.6 ÷ 5 =
  33. 33.2.7 ÷ 0.3 =
  34. 34.2/3 × 5/7 =
  35. 35.8 ÷ 0.8 =
  36. 36.2/9 × 12 =
  37. 37.4.4 ÷ 0.4 =
  38. 38.1/5 ÷ 6/7 =
  39. 39.4/7 ÷ 1/9 =
  40. 40.4/7 × 1/7 =

Answer key

  1. 0.81
  2. 32/9
  3. 8
  4. 9/7
  5. 1/32
  6. 18.6
  7. 49.5
  8. 8
  9. 5/54
  10. 24.8
  11. 4.25
  12. 9.51
  13. 8.66
  14. 15/4
  15. 3
  16. 7/2
  17. 11
  18. 49/8
  19. 61.2
  20. 24/5
  21. 4
  22. 5/14
  23. 5.36
  24. 54/7
  25. 2.16
  26. 2/3
  27. 8
  28. 0.97
  29. 12
  30. 14/3
  31. 9/20
  32. 0.12
  33. 9
  34. 10/21
  35. 10
  36. 8/3
  37. 11
  38. 7/30
  39. 36/7
  40. 4/49

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