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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 553 · 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.One bag of potatoes weighs 9.6 kg. How many kg do 2 of them make in all? =
  2. 2.0.95 ÷ 5 =
  3. 3.8.1 × 0.7 =
  4. 4.3/5 ÷ 1/5 =
  5. 5.1/2 ÷ 5/8 =
  6. 6.One roll of ribbon has 8.7 m. How many m do 8 of them make in all? =
  7. 7.2/3 ÷ 4/9 =
  8. 8.5/6 × 5 =
  9. 9.2/3 × 13 =
  10. 10.8/9 × 7 =
  11. 11.4 ÷ 0.4 =
  12. 12.2/9 × 2/7 =
  13. 13.7/8 × 1/5 =
  14. 14.22.72 ÷ 4 =
  15. 15.2.3 × 0.4 =
  16. 16.58.24 ÷ 8 =
  17. 17.3.3 ÷ 0.3 =
  18. 18.11.25 ÷ 5 =
  19. 19.8.2 × 0.6 =
  20. 20.4.4 × 0.3 =
  21. 21.1/6 × 7/8 =
  22. 22.2 ÷ 0.5 =
  23. 23.1/3 ÷ 8/9 =
  24. 24.1/4 × 1/6 =
  25. 25.1/9 × 9 =
  26. 26.One bottle of oil holds 6.8 L. How many L do 11 of them make in all? =
  27. 27.2/5 × 8 =
  28. 28.4.38 ÷ 2 =
  29. 29.8.2 × 0.9 =
  30. 30.5.8 × 0.2 =
  31. 31.5/9 × 7 =
  32. 32.33.76 ÷ 8 =
  33. 33.3.2 × 0.3 =
  34. 34.4/7 × 5/9 =
  35. 35.4.4 × 0.7 =
  36. 36.1.6 × 0.3 =
  37. 37.One packet of rice weighs 5.5 kg. How many kg do 6 of them make in all? =
  38. 38.2/3 × 2/5 =
  39. 39.5/9 × 11 =
  40. 40.1/2 × 1/9 =

Answer key

  1. 19.2
  2. 0.19
  3. 5.67
  4. 3
  5. 4/5
  6. 69.6
  7. 3/2
  8. 25/6
  9. 26/3
  10. 56/9
  11. 10
  12. 4/63
  13. 7/40
  14. 5.68
  15. 0.92
  16. 7.28
  17. 11
  18. 2.25
  19. 4.92
  20. 1.32
  21. 7/48
  22. 4
  23. 3/8
  24. 1/24
  25. 1
  26. 74.8
  27. 16/5
  28. 2.19
  29. 7.38
  30. 1.16
  31. 35/9
  32. 4.22
  33. 0.96
  34. 20/63
  35. 3.08
  36. 0.48
  37. 33
  38. 4/15
  39. 55/9
  40. 1/18

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