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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 96 · 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 2.5 kg. How many kg do 9 of them make in all? =
  2. 2.1/2 × 1/7 =
  3. 3.1.8 × 0.3 =
  4. 4.0.5 × 0.9 =
  5. 5.7.2 ÷ 0.9 =
  6. 6.5/8 ÷ 4/5 =
  7. 7.2.86 ÷ 2 =
  8. 8.2/9 × 13 =
  9. 9.1/3 × 2 =
  10. 10.One jug of milk holds 7.1 L. How many L do 4 of them make in all? =
  11. 11.3.3 ÷ 0.3 =
  12. 12.One packet of rice weighs 1.7 kg. How many kg do 2 of them make in all? =
  13. 13.4.52 ÷ 2 =
  14. 14.1/7 × 7 =
  15. 15.One packet of rice weighs 1.9 kg. How many kg do 2 of them make in all? =
  16. 16.2/5 × 1/4 =
  17. 17.27.72 ÷ 4 =
  18. 18.One bottle of oil holds 2.2 L. How many L do 11 of them make in all? =
  19. 19.1/2 × 6 =
  20. 20.11.84 ÷ 2 =
  21. 21.One jug of milk holds 1.5 L. How many L do 3 of them make in all? =
  22. 22.37.12 ÷ 8 =
  23. 23.3/5 × 1/5 =
  24. 24.33.28 ÷ 4 =
  25. 25.2.8 ÷ 0.7 =
  26. 26.One bag of potatoes weighs 2.8 kg. How many kg do 9 of them make in all? =
  27. 27.3.22 ÷ 2 =
  28. 28.0.3 × 0.5 =
  29. 29.1/7 × 8 =
  30. 30.7.2 × 0.5 =
  31. 31.4.4 ÷ 0.4 =
  32. 32.3/7 ÷ 3/5 =
  33. 33.3/5 ÷ 2/7 =
  34. 34.7.7 ÷ 0.7 =
  35. 35.One roll of ribbon has 5.9 m. How many m do 7 of them make in all? =
  36. 36.1.8 ÷ 0.9 =
  37. 37.6.2 × 0.8 =
  38. 38.5/9 ÷ 3/7 =
  39. 39.One roll of ribbon has 5.8 m. How many m do 8 of them make in all? =
  40. 40.5.4 ÷ 0.9 =

Answer key

  1. 22.5
  2. 1/14
  3. 0.54
  4. 0.45
  5. 8
  6. 25/32
  7. 1.43
  8. 26/9
  9. 2/3
  10. 28.4
  11. 11
  12. 3.4
  13. 2.26
  14. 1
  15. 3.8
  16. 1/10
  17. 6.93
  18. 24.2
  19. 3
  20. 5.92
  21. 4.5
  22. 4.64
  23. 3/25
  24. 8.32
  25. 4
  26. 25.2
  27. 1.61
  28. 0.15
  29. 8/7
  30. 3.6
  31. 11
  32. 5/7
  33. 21/10
  34. 11
  35. 41.3
  36. 2
  37. 4.96
  38. 35/27
  39. 46.4
  40. 6

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