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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 170 · 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. 1.2.3 × 0.2 =
  2. 2.One bottle of oil holds 2.3 L. How many L do 5 of them make in all? =
  3. 3.16.35 ÷ 5 =
  4. 4.3/7 × 10 =
  5. 5.One bottle of oil holds 3.3 L. How many L do 7 of them make in all? =
  6. 6.5/6 × 3/5 =
  7. 7.8.2 × 0.7 =
  8. 8.1/4 × 3/8 =
  9. 9.One bag of potatoes weighs 9.1 kg. How many kg do 5 of them make in all? =
  10. 10.33.6 ÷ 5 =
  11. 11.6.2 × 0.8 =
  12. 12.One bag of potatoes weighs 8.9 kg. How many kg do 9 of them make in all? =
  13. 13.2/9 × 2 =
  14. 14.One roll of ribbon has 8.7 m. How many m do 6 of them make in all? =
  15. 15.5/6 × 14 =
  16. 16.3.5 × 0.9 =
  17. 17.One bag of potatoes weighs 2.5 kg. How many kg do 10 of them make in all? =
  18. 18.36.96 ÷ 8 =
  19. 19.0.95 ÷ 5 =
  20. 20.8.5 × 0.4 =
  21. 21.4.5 × 0.7 =
  22. 22.2/9 × 3 =
  23. 23.4/5 ÷ 3/7 =
  24. 24.One bottle of oil holds 1.9 L. How many L do 5 of them make in all? =
  25. 25.8.1 ÷ 5 =
  26. 26.7/9 × 3/8 =
  27. 27.One jug of milk holds 6.2 L. How many L do 2 of them make in all? =
  28. 28.4.4 × 0.3 =
  29. 29.50.4 ÷ 8 =
  30. 30.6.4 ÷ 0.8 =
  31. 31.5.6 ÷ 0.8 =
  32. 32.7/8 × 2/3 =
  33. 33.8/9 × 13 =
  34. 34.5.6 × 0.9 =
  35. 35.3/4 × 4/7 =
  36. 36.3/4 × 5 =
  37. 37.71.36 ÷ 8 =
  38. 38.1 ÷ 0.5 =
  39. 39.One packet of rice weighs 6 kg. How many kg do 7 of them make in all? =
  40. 40.1.5 ÷ 0.5 =

Answer key

  1. 0.46
  2. 11.5
  3. 3.27
  4. 30/7
  5. 23.1
  6. 1/2
  7. 5.74
  8. 3/32
  9. 45.5
  10. 6.72
  11. 4.96
  12. 80.1
  13. 4/9
  14. 52.2
  15. 35/3
  16. 3.15
  17. 25
  18. 4.62
  19. 0.19
  20. 3.4
  21. 3.15
  22. 2/3
  23. 28/15
  24. 9.5
  25. 1.62
  26. 7/24
  27. 12.4
  28. 1.32
  29. 6.3
  30. 8
  31. 7
  32. 7/12
  33. 104/9
  34. 5.04
  35. 3/7
  36. 15/4
  37. 8.92
  38. 2
  39. 42
  40. 3

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