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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 78 · 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. 1.46.65 ÷ 5 =
  2. 2.8.8 × 0.8 =
  3. 3.2.1 × 0.2 =
  4. 4.7/8 × 3/4 =
  5. 5.1.6 ÷ 0.4 =
  6. 6.5.3 × 0.5 =
  7. 7.1/4 × 7/8 =
  8. 8.2/3 × 3 =
  9. 9.1/8 × 7/8 =
  10. 10.3 ÷ 0.5 =
  11. 11.One jug of milk holds 9.9 L. How many L do 11 of them make in all? =
  12. 12.1.4 ÷ 0.2 =
  13. 13.One packet of rice weighs 4.1 kg. How many kg do 4 of them make in all? =
  14. 14.5.2 × 0.3 =
  15. 15.5/7 × 3 =
  16. 16.5/8 ÷ 5/9 =
  17. 17.One roll of ribbon has 2.4 m. How many m do 6 of them make in all? =
  18. 18.9 ÷ 0.9 =
  19. 19.24.7 ÷ 5 =
  20. 20.7/8 ÷ 5/8 =
  21. 21.One bottle of oil holds 9.3 L. How many L do 3 of them make in all? =
  22. 22.3/5 × 6 =
  23. 23.16.5 ÷ 2 =
  24. 24.1/7 ÷ 4/5 =
  25. 25.One bag of potatoes weighs 5 kg. How many kg do 12 of them make in all? =
  26. 26.5.6 × 0.3 =
  27. 27.4.96 ÷ 4 =
  28. 28.1.3 × 0.3 =
  29. 29.3.02 ÷ 2 =
  30. 30.36.55 ÷ 5 =
  31. 31.4/5 × 3/4 =
  32. 32.1/2 × 13 =
  33. 33.One bottle of oil holds 5 L. How many L do 2 of them make in all? =
  34. 34.One bag of potatoes weighs 4.3 kg. How many kg do 8 of them make in all? =
  35. 35.2/9 × 7/8 =
  36. 36.1/3 × 1/5 =
  37. 37.1/2 × 10 =
  38. 38.3/5 × 12 =
  39. 39.4/7 ÷ 1/5 =
  40. 40.0.5 × 0.6 =

Answer key

  1. 9.33
  2. 7.04
  3. 0.42
  4. 21/32
  5. 4
  6. 2.65
  7. 7/32
  8. 2
  9. 7/64
  10. 6
  11. 108.9
  12. 7
  13. 16.4
  14. 1.56
  15. 15/7
  16. 9/8
  17. 14.4
  18. 10
  19. 4.94
  20. 7/5
  21. 27.9
  22. 18/5
  23. 8.25
  24. 5/28
  25. 60
  26. 1.68
  27. 1.24
  28. 0.39
  29. 1.51
  30. 7.31
  31. 3/5
  32. 13/2
  33. 10
  34. 34.4
  35. 7/36
  36. 1/15
  37. 5
  38. 36/5
  39. 20/7
  40. 0.3

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