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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 552 · 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. 1.7/8 × 1/9 =
  2. 2.2/9 ÷ 1/2 =
  3. 3.1/3 × 8 =
  4. 4.5/8 × 6/7 =
  5. 5.3/4 × 5/7 =
  6. 6.One bag of potatoes weighs 5.2 kg. How many kg do 12 of them make in all? =
  7. 7.16.16 ÷ 2 =
  8. 8.4/5 × 3 =
  9. 9.3 ÷ 0.5 =
  10. 10.2/5 × 13 =
  11. 11.3.8 × 0.3 =
  12. 12.1/9 × 8 =
  13. 13.68.16 ÷ 8 =
  14. 14.6.4 × 0.5 =
  15. 15.5/7 ÷ 2/9 =
  16. 16.2.7 × 0.4 =
  17. 17.5/7 × 9 =
  18. 18.1/3 × 1/6 =
  19. 19.1.2 × 0.3 =
  20. 20.2/9 × 1/2 =
  21. 21.2/3 × 5/8 =
  22. 22.One packet of rice weighs 8 kg. How many kg do 3 of them make in all? =
  23. 23.0.5 × 0.3 =
  24. 24.1/9 ÷ 6/7 =
  25. 25.4.2 × 0.8 =
  26. 26.3.1 × 0.8 =
  27. 27.4.4 × 0.2 =
  28. 28.1.2 × 0.8 =
  29. 29.8/9 ÷ 3/5 =
  30. 30.One bottle of oil holds 6.5 L. How many L do 6 of them make in all? =
  31. 31.3.4 × 0.9 =
  32. 32.1/8 × 3 =
  33. 33.38.08 ÷ 8 =
  34. 34.3/7 × 1/5 =
  35. 35.2.8 ÷ 0.4 =
  36. 36.One roll of ribbon has 2.2 m. How many m do 4 of them make in all? =
  37. 37.6/7 × 8/9 =
  38. 38.44.8 ÷ 8 =
  39. 39.2.4 ÷ 0.3 =
  40. 40.One bag of potatoes weighs 5.7 kg. How many kg do 4 of them make in all? =

Answer key

  1. 7/72
  2. 4/9
  3. 8/3
  4. 15/28
  5. 15/28
  6. 62.4
  7. 8.08
  8. 12/5
  9. 6
  10. 26/5
  11. 1.14
  12. 8/9
  13. 8.52
  14. 3.2
  15. 45/14
  16. 1.08
  17. 45/7
  18. 1/18
  19. 0.36
  20. 1/9
  21. 5/12
  22. 24
  23. 0.15
  24. 7/54
  25. 3.36
  26. 2.48
  27. 0.88
  28. 0.96
  29. 40/27
  30. 39
  31. 3.06
  32. 3/8
  33. 4.76
  34. 3/35
  35. 7
  36. 8.8
  37. 16/21
  38. 5.6
  39. 8
  40. 22.8

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