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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 205 · 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.One packet of rice weighs 9.5 kg. How many kg do 3 of them make in all? =
  2. 2.7/9 × 10 =
  3. 3.9.6 × 0.7 =
  4. 4.One bottle of oil holds 4 L. How many L do 12 of them make in all? =
  5. 5.21.84 ÷ 4 =
  6. 6.7 ÷ 0.7 =
  7. 7.1/6 ÷ 1/7 =
  8. 8.One roll of ribbon has 8.8 m. How many m do 12 of them make in all? =
  9. 9.2/7 × 4 =
  10. 10.6.6 ÷ 0.6 =
  11. 11.34.32 ÷ 8 =
  12. 12.One bottle of oil holds 5.6 L. How many L do 3 of them make in all? =
  13. 13.One roll of ribbon has 1.6 m. How many m do 7 of them make in all? =
  14. 14.One bag of potatoes weighs 4.5 kg. How many kg do 9 of them make in all? =
  15. 15.5/7 × 9 =
  16. 16.7/8 × 5 =
  17. 17.4.4 ÷ 0.4 =
  18. 18.3/4 × 11 =
  19. 19.5/6 ÷ 1/7 =
  20. 20.One bag of potatoes weighs 9 kg. How many kg do 3 of them make in all? =
  21. 21.One bag of potatoes weighs 8.8 kg. How many kg do 7 of them make in all? =
  22. 22.2/5 × 9 =
  23. 23.3/4 × 5/7 =
  24. 24.18.5 ÷ 5 =
  25. 25.1/6 × 1/4 =
  26. 26.3/4 × 5/8 =
  27. 27.9 ÷ 0.9 =
  28. 28.6/7 ÷ 2/9 =
  29. 29.One bottle of oil holds 7.3 L. How many L do 10 of them make in all? =
  30. 30.3/7 × 6/7 =
  31. 31.4/7 × 11 =
  32. 32.One packet of rice weighs 8.4 kg. How many kg do 9 of them make in all? =
  33. 33.1/3 × 1/8 =
  34. 34.0.1 × 0.8 =
  35. 35.4/7 × 2/7 =
  36. 36.2.2 × 0.3 =
  37. 37.2/9 × 10 =
  38. 38.4 ÷ 0.5 =
  39. 39.2.4 ÷ 0.4 =
  40. 40.3.5 ÷ 0.7 =

Answer key

  1. 28.5
  2. 70/9
  3. 6.72
  4. 48
  5. 5.46
  6. 10
  7. 7/6
  8. 105.6
  9. 8/7
  10. 11
  11. 4.29
  12. 16.8
  13. 11.2
  14. 40.5
  15. 45/7
  16. 35/8
  17. 11
  18. 33/4
  19. 35/6
  20. 27
  21. 61.6
  22. 18/5
  23. 15/28
  24. 3.7
  25. 1/24
  26. 15/32
  27. 10
  28. 27/7
  29. 73
  30. 18/49
  31. 44/7
  32. 75.6
  33. 1/24
  34. 0.08
  35. 8/49
  36. 0.66
  37. 20/9
  38. 8
  39. 6
  40. 5

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