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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 529 · 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. 1.5/9 × 5 =
  2. 2.One jug of milk holds 5.1 L. How many L do 9 of them make in all? =
  3. 3.3/7 ÷ 4/5 =
  4. 4.One bottle of oil holds 6.1 L. How many L do 8 of them make in all? =
  5. 5.3 ÷ 0.6 =
  6. 6.One bottle of oil holds 3.1 L. How many L do 12 of them make in all? =
  7. 7.One roll of ribbon has 1.3 m. How many m do 8 of them make in all? =
  8. 8.One roll of ribbon has 8.7 m. How many m do 4 of them make in all? =
  9. 9.3/4 × 1/4 =
  10. 10.7/9 × 6 =
  11. 11.One bottle of oil holds 3.3 L. How many L do 3 of them make in all? =
  12. 12.3/5 × 7/9 =
  13. 13.47.2 ÷ 8 =
  14. 14.One roll of ribbon has 3.6 m. How many m do 3 of them make in all? =
  15. 15.1.6 ÷ 0.2 =
  16. 16.2/7 ÷ 2/5 =
  17. 17.1/5 × 5 =
  18. 18.32.64 ÷ 4 =
  19. 19.5.1 × 0.6 =
  20. 20.6.2 × 0.4 =
  21. 21.4.9 × 0.7 =
  22. 22.One jug of milk holds 1.6 L. How many L do 3 of them make in all? =
  23. 23.8.7 × 0.8 =
  24. 24.1/8 × 1/7 =
  25. 25.5/6 × 6/7 =
  26. 26.2/5 ÷ 5/7 =
  27. 27.5/7 × 5 =
  28. 28.46.56 ÷ 8 =
  29. 29.3/4 ÷ 1/9 =
  30. 30.1/8 × 8/9 =
  31. 31.12.6 ÷ 4 =
  32. 32.4/5 × 1/4 =
  33. 33.1/2 × 8 =
  34. 34.One jug of milk holds 8.4 L. How many L do 12 of them make in all? =
  35. 35.1/6 ÷ 5/9 =
  36. 36.3/5 × 11 =
  37. 37.3/7 × 14 =
  38. 38.8/9 ÷ 7/9 =
  39. 39.2/9 × 1/7 =
  40. 40.2/3 × 11 =

Answer key

  1. 25/9
  2. 45.9
  3. 15/28
  4. 48.8
  5. 5
  6. 37.2
  7. 10.4
  8. 34.8
  9. 3/16
  10. 14/3
  11. 9.9
  12. 7/15
  13. 5.9
  14. 10.8
  15. 8
  16. 5/7
  17. 1
  18. 8.16
  19. 3.06
  20. 2.48
  21. 3.43
  22. 4.8
  23. 6.96
  24. 1/56
  25. 5/7
  26. 14/25
  27. 25/7
  28. 5.82
  29. 27/4
  30. 1/9
  31. 3.15
  32. 1/5
  33. 4
  34. 100.8
  35. 3/10
  36. 33/5
  37. 6
  38. 8/7
  39. 2/63
  40. 22/3

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