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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 148 · 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. 1.41.65 ÷ 5 =
  2. 2.8.5 × 0.9 =
  3. 3.One jug of milk holds 1.8 L. How many L do 4 of them make in all? =
  4. 4.1/3 ÷ 4/7 =
  5. 5.2/7 × 4/5 =
  6. 6.4/9 ÷ 3/4 =
  7. 7.One bottle of oil holds 1.3 L. How many L do 2 of them make in all? =
  8. 8.7/8 × 13 =
  9. 9.4/5 × 10 =
  10. 10.One jug of milk holds 5.4 L. How many L do 9 of them make in all? =
  11. 11.5/8 ÷ 3/4 =
  12. 12.One roll of ribbon has 5.7 m. How many m do 5 of them make in all? =
  13. 13.1/9 × 10 =
  14. 14.35.6 ÷ 8 =
  15. 15.1/6 × 8/9 =
  16. 16.One bag of potatoes weighs 5.3 kg. How many kg do 3 of them make in all? =
  17. 17.47.12 ÷ 8 =
  18. 18.1/9 × 15 =
  19. 19.7.4 × 0.3 =
  20. 20.One packet of rice weighs 2.9 kg. How many kg do 8 of them make in all? =
  21. 21.8.4 ÷ 0.7 =
  22. 22.1.4 × 0.5 =
  23. 23.3/4 ÷ 4/7 =
  24. 24.One packet of rice weighs 7.9 kg. How many kg do 8 of them make in all? =
  25. 25.29.56 ÷ 4 =
  26. 26.One jug of milk holds 8.4 L. How many L do 12 of them make in all? =
  27. 27.9.9 × 0.2 =
  28. 28.2/9 × 4 =
  29. 29.3/5 ÷ 1/5 =
  30. 30.5/7 × 7/9 =
  31. 31.One bottle of oil holds 1.6 L. How many L do 7 of them make in all? =
  32. 32.1/6 ÷ 5/9 =
  33. 33.8 ÷ 0.8 =
  34. 34.3/5 ÷ 2/5 =
  35. 35.5.8 × 0.4 =
  36. 36.One bottle of oil holds 1.5 L. How many L do 11 of them make in all? =
  37. 37.2.2 × 0.3 =
  38. 38.1.6 ÷ 0.2 =
  39. 39.3/7 × 7 =
  40. 40.8/9 × 3/5 =

Answer key

  1. 8.33
  2. 7.65
  3. 7.2
  4. 7/12
  5. 8/35
  6. 16/27
  7. 2.6
  8. 91/8
  9. 8
  10. 48.6
  11. 5/6
  12. 28.5
  13. 10/9
  14. 4.45
  15. 4/27
  16. 15.9
  17. 5.89
  18. 5/3
  19. 2.22
  20. 23.2
  21. 12
  22. 0.7
  23. 21/16
  24. 63.2
  25. 7.39
  26. 100.8
  27. 1.98
  28. 8/9
  29. 3
  30. 5/9
  31. 11.2
  32. 3/10
  33. 10
  34. 3/2
  35. 2.32
  36. 16.5
  37. 0.66
  38. 8
  39. 3
  40. 8/15

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