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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 11 · 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 × 2/9 =
  2. 2.8.2 × 0.8 =
  3. 3.2.5 ÷ 2 =
  4. 4.1/3 × 2 =
  5. 5.3/5 × 6/7 =
  6. 6.One roll of ribbon has 5.7 m. How many m do 5 of them make in all? =
  7. 7.One bag of potatoes weighs 5.5 kg. How many kg do 5 of them make in all? =
  8. 8.4.8 ÷ 0.4 =
  9. 9.30.48 ÷ 4 =
  10. 10.4.5 ÷ 0.9 =
  11. 11.One bag of potatoes weighs 1.7 kg. How many kg do 7 of them make in all? =
  12. 12.One packet of rice weighs 2.5 kg. How many kg do 10 of them make in all? =
  13. 13.15.78 ÷ 2 =
  14. 14.7.2 ÷ 0.9 =
  15. 15.One roll of ribbon has 2.5 m. How many m do 12 of them make in all? =
  16. 16.5/6 × 5 =
  17. 17.6.4 ÷ 2 =
  18. 18.1/8 × 2/9 =
  19. 19.5/9 × 3 =
  20. 20.One bag of potatoes weighs 9.8 kg. How many kg do 11 of them make in all? =
  21. 21.5.65 ÷ 5 =
  22. 22.One roll of ribbon has 2.1 m. How many m do 8 of them make in all? =
  23. 23.One jug of milk holds 2.1 L. How many L do 8 of them make in all? =
  24. 24.1.3 × 0.3 =
  25. 25.One bottle of oil holds 7.6 L. How many L do 8 of them make in all? =
  26. 26.6.1 × 0.5 =
  27. 27.16.74 ÷ 2 =
  28. 28.2.8 ÷ 0.7 =
  29. 29.26.56 ÷ 8 =
  30. 30.One packet of rice weighs 5.8 kg. How many kg do 3 of them make in all? =
  31. 31.2/9 × 6/7 =
  32. 32.1.94 ÷ 2 =
  33. 33.1/7 × 10 =
  34. 34.7.3 × 0.2 =
  35. 35.2.9 × 0.8 =
  36. 36.2/7 × 1/4 =
  37. 37.2/3 × 4 =
  38. 38.8.2 × 0.2 =
  39. 39.77.28 ÷ 8 =
  40. 40.1 ÷ 0.2 =

Answer key

  1. 8/63
  2. 6.56
  3. 1.25
  4. 2/3
  5. 18/35
  6. 28.5
  7. 27.5
  8. 12
  9. 7.62
  10. 5
  11. 11.9
  12. 25
  13. 7.89
  14. 8
  15. 30
  16. 25/6
  17. 3.2
  18. 1/36
  19. 5/3
  20. 107.8
  21. 1.13
  22. 16.8
  23. 16.8
  24. 0.39
  25. 60.8
  26. 3.05
  27. 8.37
  28. 4
  29. 3.32
  30. 17.4
  31. 4/21
  32. 0.97
  33. 10/7
  34. 1.46
  35. 2.32
  36. 1/14
  37. 8/3
  38. 1.64
  39. 9.66
  40. 5

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