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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 286 · 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. 1.2/9 × 9 =
  2. 2.4.9 × 0.4 =
  3. 3.61.6 ÷ 8 =
  4. 4.2.2 × 0.6 =
  5. 5.One packet of rice weighs 5.2 kg. How many kg do 8 of them make in all? =
  6. 6.2.2 ÷ 0.2 =
  7. 7.0.8 × 0.4 =
  8. 8.3.1 × 0.8 =
  9. 9.23 ÷ 5 =
  10. 10.18.28 ÷ 4 =
  11. 11.6.6 ÷ 0.6 =
  12. 12.3/5 × 1/2 =
  13. 13.One jug of milk holds 4.2 L. How many L do 3 of them make in all? =
  14. 14.3/4 ÷ 3/7 =
  15. 15.9.1 × 0.2 =
  16. 16.5/9 × 1/6 =
  17. 17.3/5 × 4 =
  18. 18.78.8 ÷ 8 =
  19. 19.7.4 × 0.3 =
  20. 20.1/4 × 9 =
  21. 21.One bag of potatoes weighs 8.8 kg. How many kg do 9 of them make in all? =
  22. 22.0.7 × 0.7 =
  23. 23.One roll of ribbon has 6.5 m. How many m do 5 of them make in all? =
  24. 24.1/7 × 4/7 =
  25. 25.6.5 × 0.7 =
  26. 26.1.5 × 0.2 =
  27. 27.2/7 × 2/3 =
  28. 28.1.76 ÷ 2 =
  29. 29.1/6 × 13 =
  30. 30.7.2 ÷ 0.9 =
  31. 31.One packet of rice weighs 1.9 kg. How many kg do 9 of them make in all? =
  32. 32.5/7 × 13 =
  33. 33.1/3 × 3/4 =
  34. 34.One bag of potatoes weighs 7.9 kg. How many kg do 8 of them make in all? =
  35. 35.6/7 × 3/8 =
  36. 36.1.6 ÷ 0.8 =
  37. 37.1/4 × 13 =
  38. 38.One bottle of oil holds 5.4 L. How many L do 3 of them make in all? =
  39. 39.5/6 × 15 =
  40. 40.8.1 ÷ 0.9 =

Answer key

  1. 2
  2. 1.96
  3. 7.7
  4. 1.32
  5. 41.6
  6. 11
  7. 0.32
  8. 2.48
  9. 4.6
  10. 4.57
  11. 11
  12. 3/10
  13. 12.6
  14. 7/4
  15. 1.82
  16. 5/54
  17. 12/5
  18. 9.85
  19. 2.22
  20. 9/4
  21. 79.2
  22. 0.49
  23. 32.5
  24. 4/49
  25. 4.55
  26. 0.3
  27. 4/21
  28. 0.88
  29. 13/6
  30. 8
  31. 17.1
  32. 65/7
  33. 1/4
  34. 63.2
  35. 9/28
  36. 2
  37. 13/4
  38. 16.2
  39. 25/2
  40. 9

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