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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 433 · 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. 1.7.2 ÷ 0.8 =
  2. 2.2.6 × 0.2 =
  3. 3.2.4 × 0.4 =
  4. 4.0.3 × 0.2 =
  5. 5.5.9 × 0.8 =
  6. 6.1/9 × 8 =
  7. 7.One bag of potatoes weighs 7.1 kg. How many kg do 3 of them make in all? =
  8. 8.One bag of potatoes weighs 1.8 kg. How many kg do 9 of them make in all? =
  9. 9.4/7 ÷ 7/8 =
  10. 10.1/9 ÷ 2/5 =
  11. 11.7.38 ÷ 2 =
  12. 12.1/6 ÷ 5/8 =
  13. 13.One bag of potatoes weighs 2.9 kg. How many kg do 7 of them make in all? =
  14. 14.5/7 × 3 =
  15. 15.8.6 × 0.4 =
  16. 16.1.6 ÷ 0.4 =
  17. 17.3/5 × 2 =
  18. 18.One packet of rice weighs 5.2 kg. How many kg do 9 of them make in all? =
  19. 19.7/8 ÷ 1/5 =
  20. 20.1.1 × 0.2 =
  21. 21.2.6 × 0.3 =
  22. 22.5/6 ÷ 2/7 =
  23. 23.3/4 × 5/6 =
  24. 24.2.4 ÷ 0.4 =
  25. 25.One packet of rice weighs 4.9 kg. How many kg do 4 of them make in all? =
  26. 26.36.48 ÷ 4 =
  27. 27.3/5 × 7 =
  28. 28.10.8 ÷ 0.9 =
  29. 29.One packet of rice weighs 2.9 kg. How many kg do 2 of them make in all? =
  30. 30.8/9 × 5/7 =
  31. 31.One roll of ribbon has 6.5 m. How many m do 6 of them make in all? =
  32. 32.32.88 ÷ 8 =
  33. 33.7.1 × 0.9 =
  34. 34.4.8 ÷ 0.8 =
  35. 35.1/6 × 5/6 =
  36. 36.24.48 ÷ 8 =
  37. 37.7/8 × 14 =
  38. 38.3/4 ÷ 1/4 =
  39. 39.4 ÷ 0.4 =
  40. 40.4/5 × 9 =

Answer key

  1. 9
  2. 0.52
  3. 0.96
  4. 0.06
  5. 4.72
  6. 8/9
  7. 21.3
  8. 16.2
  9. 32/49
  10. 5/18
  11. 3.69
  12. 4/15
  13. 20.3
  14. 15/7
  15. 3.44
  16. 4
  17. 6/5
  18. 46.8
  19. 35/8
  20. 0.22
  21. 0.78
  22. 35/12
  23. 5/8
  24. 6
  25. 19.6
  26. 9.12
  27. 21/5
  28. 12
  29. 5.8
  30. 40/63
  31. 39
  32. 4.11
  33. 6.39
  34. 6
  35. 5/36
  36. 3.06
  37. 49/4
  38. 3
  39. 10
  40. 36/5

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