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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 239 · 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. 1.3/7 × 3/7 =
  2. 2.3.6 × 0.7 =
  3. 3.2.4 ÷ 0.2 =
  4. 4.One bottle of oil holds 1.7 L. How many L do 9 of them make in all? =
  5. 5.One packet of rice weighs 5.5 kg. How many kg do 7 of them make in all? =
  6. 6.9 ÷ 0.9 =
  7. 7.1/8 ÷ 2/5 =
  8. 8.1/4 × 4 =
  9. 9.One bag of potatoes weighs 8.5 kg. How many kg do 7 of them make in all? =
  10. 10.33.52 ÷ 4 =
  11. 11.1/9 × 15 =
  12. 12.2/9 × 1/5 =
  13. 13.0.4 × 0.3 =
  14. 14.1/3 × 11 =
  15. 15.One packet of rice weighs 1.1 kg. How many kg do 10 of them make in all? =
  16. 16.6.2 × 0.9 =
  17. 17.7.1 × 0.6 =
  18. 18.One packet of rice weighs 1.9 kg. How many kg do 7 of them make in all? =
  19. 19.4.5 × 0.6 =
  20. 20.5/7 × 12 =
  21. 21.1/9 × 2/5 =
  22. 22.2/3 × 6 =
  23. 23.1.5 ÷ 0.3 =
  24. 24.6.3 ÷ 0.7 =
  25. 25.4/9 × 6 =
  26. 26.34.72 ÷ 8 =
  27. 27.1/4 × 13 =
  28. 28.One packet of rice weighs 2.4 kg. How many kg do 11 of them make in all? =
  29. 29.4/7 ÷ 1/3 =
  30. 30.5.9 × 0.4 =
  31. 31.2/5 × 1/8 =
  32. 32.5.2 × 0.2 =
  33. 33.2.4 × 0.3 =
  34. 34.One packet of rice weighs 1.3 kg. How many kg do 2 of them make in all? =
  35. 35.4 ÷ 0.5 =
  36. 36.One roll of ribbon has 5.3 m. How many m do 4 of them make in all? =
  37. 37.3/4 ÷ 1/3 =
  38. 38.1/2 × 11 =
  39. 39.7/8 × 9 =
  40. 40.4.2 × 0.9 =

Answer key

  1. 9/49
  2. 2.52
  3. 12
  4. 15.3
  5. 38.5
  6. 10
  7. 5/16
  8. 1
  9. 59.5
  10. 8.38
  11. 5/3
  12. 2/45
  13. 0.12
  14. 11/3
  15. 11
  16. 5.58
  17. 4.26
  18. 13.3
  19. 2.7
  20. 60/7
  21. 2/45
  22. 4
  23. 5
  24. 9
  25. 8/3
  26. 4.34
  27. 13/4
  28. 26.4
  29. 12/7
  30. 2.36
  31. 1/20
  32. 1.04
  33. 0.72
  34. 2.6
  35. 8
  36. 21.2
  37. 9/4
  38. 11/2
  39. 63/8
  40. 3.78

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