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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 454 · 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. 1.2.6 × 0.4 =
  2. 2.1.5 ÷ 0.5 =
  3. 3.1/3 × 2/5 =
  4. 4.2.1 × 0.8 =
  5. 5.One jug of milk holds 4.6 L. How many L do 9 of them make in all? =
  6. 6.2/7 × 4/9 =
  7. 7.1/8 × 2 =
  8. 8.0.1 × 0.6 =
  9. 9.One roll of ribbon has 6.4 m. How many m do 9 of them make in all? =
  10. 10.18.52 ÷ 4 =
  11. 11.1/5 × 11 =
  12. 12.1/8 × 5 =
  13. 13.5/7 ÷ 1/5 =
  14. 14.5/6 × 2/7 =
  15. 15.1/7 ÷ 5/8 =
  16. 16.27.8 ÷ 5 =
  17. 17.2.3 × 0.3 =
  18. 18.1/9 × 3/7 =
  19. 19.One jug of milk holds 2.2 L. How many L do 12 of them make in all? =
  20. 20.27.8 ÷ 4 =
  21. 21.One bottle of oil holds 3.8 L. How many L do 8 of them make in all? =
  22. 22.5/8 × 12 =
  23. 23.2.1 ÷ 0.7 =
  24. 24.3/4 ÷ 2/7 =
  25. 25.4 ÷ 0.4 =
  26. 26.One bag of potatoes weighs 9.9 kg. How many kg do 5 of them make in all? =
  27. 27.One roll of ribbon has 2.5 m. How many m do 11 of them make in all? =
  28. 28.3/4 × 5/6 =
  29. 29.1.8 ÷ 0.2 =
  30. 30.One bag of potatoes weighs 9.4 kg. How many kg do 9 of them make in all? =
  31. 31.3 ÷ 0.5 =
  32. 32.3/7 × 8/9 =
  33. 33.2/3 ÷ 3/8 =
  34. 34.1/3 × 15 =
  35. 35.3/5 × 1/4 =
  36. 36.2.9 × 0.9 =
  37. 37.1/2 × 1/8 =
  38. 38.5.8 × 0.8 =
  39. 39.One bottle of oil holds 3.7 L. How many L do 4 of them make in all? =
  40. 40.1/7 × 5 =

Answer key

  1. 1.04
  2. 3
  3. 2/15
  4. 1.68
  5. 41.4
  6. 8/63
  7. 1/4
  8. 0.06
  9. 57.6
  10. 4.63
  11. 11/5
  12. 5/8
  13. 25/7
  14. 5/21
  15. 8/35
  16. 5.56
  17. 0.69
  18. 1/21
  19. 26.4
  20. 6.95
  21. 30.4
  22. 15/2
  23. 3
  24. 21/8
  25. 10
  26. 49.5
  27. 27.5
  28. 5/8
  29. 9
  30. 84.6
  31. 6
  32. 8/21
  33. 16/9
  34. 5
  35. 3/20
  36. 2.61
  37. 1/16
  38. 4.64
  39. 14.8
  40. 5/7

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