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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 326 · 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. 1.4/7 × 5 =
  2. 2.3/4 × 12 =
  3. 3.One bag of potatoes weighs 2.1 kg. How many kg do 3 of them make in all? =
  4. 4.3/4 ÷ 6/7 =
  5. 5.1/7 ÷ 1/6 =
  6. 6.One bottle of oil holds 5.8 L. How many L do 3 of them make in all? =
  7. 7.29.04 ÷ 4 =
  8. 8.1.56 ÷ 4 =
  9. 9.4.12 ÷ 2 =
  10. 10.1/9 × 7/8 =
  11. 11.3/4 ÷ 1/7 =
  12. 12.3/5 × 3/4 =
  13. 13.One jug of milk holds 3.5 L. How many L do 5 of them make in all? =
  14. 14.1/4 × 4/9 =
  15. 15.5/6 × 11 =
  16. 16.One roll of ribbon has 2.4 m. How many m do 8 of them make in all? =
  17. 17.7/9 × 2 =
  18. 18.7/8 × 4 =
  19. 19.2/5 × 3/4 =
  20. 20.One bottle of oil holds 6.5 L. How many L do 9 of them make in all? =
  21. 21.One bag of potatoes weighs 5.8 kg. How many kg do 5 of them make in all? =
  22. 22.3/4 × 2/9 =
  23. 23.5/8 × 4 =
  24. 24.1/2 × 8 =
  25. 25.1/6 ÷ 3/8 =
  26. 26.2 ÷ 0.2 =
  27. 27.4/9 ÷ 7/9 =
  28. 28.17.45 ÷ 5 =
  29. 29.59.28 ÷ 8 =
  30. 30.2/9 ÷ 1/6 =
  31. 31.2/3 ÷ 1/9 =
  32. 32.9.5 × 0.9 =
  33. 33.8/9 × 1/8 =
  34. 34.8.92 ÷ 2 =
  35. 35.One bag of potatoes weighs 9.3 kg. How many kg do 4 of them make in all? =
  36. 36.7/8 ÷ 5/6 =
  37. 37.8 ÷ 0.8 =
  38. 38.0.8 ÷ 0.2 =
  39. 39.1/5 ÷ 1/7 =
  40. 40.4.5 ÷ 0.5 =

Answer key

  1. 20/7
  2. 9
  3. 6.3
  4. 7/8
  5. 6/7
  6. 17.4
  7. 7.26
  8. 0.39
  9. 2.06
  10. 7/72
  11. 21/4
  12. 9/20
  13. 17.5
  14. 1/9
  15. 55/6
  16. 19.2
  17. 14/9
  18. 7/2
  19. 3/10
  20. 58.5
  21. 29
  22. 1/6
  23. 5/2
  24. 4
  25. 4/9
  26. 10
  27. 4/7
  28. 3.49
  29. 7.41
  30. 4/3
  31. 6
  32. 8.55
  33. 1/9
  34. 4.46
  35. 37.2
  36. 21/20
  37. 10
  38. 4
  39. 7/5
  40. 9

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