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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 461 · 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. 1.8/9 ÷ 3/4 =
  2. 2.One bag of potatoes weighs 7 kg. How many kg do 11 of them make in all? =
  3. 3.1/6 × 4/7 =
  4. 4.4/5 × 8 =
  5. 5.5/7 × 6 =
  6. 6.5/9 ÷ 4/5 =
  7. 7.One bottle of oil holds 3.5 L. How many L do 4 of them make in all? =
  8. 8.5/9 × 12 =
  9. 9.1/4 × 15 =
  10. 10.1/2 ÷ 7/9 =
  11. 11.4/7 × 4 =
  12. 12.1/9 × 5/8 =
  13. 13.One bottle of oil holds 7.7 L. How many L do 7 of them make in all? =
  14. 14.6/7 × 3/5 =
  15. 15.4.2 ÷ 0.6 =
  16. 16.17.04 ÷ 2 =
  17. 17.One jug of milk holds 3 L. How many L do 3 of them make in all? =
  18. 18.7/8 × 5/7 =
  19. 19.1.8 ÷ 0.3 =
  20. 20.One bag of potatoes weighs 2.3 kg. How many kg do 3 of them make in all? =
  21. 21.One roll of ribbon has 1.5 m. How many m do 10 of them make in all? =
  22. 22.2/7 ÷ 5/9 =
  23. 23.7/9 × 5/8 =
  24. 24.One roll of ribbon has 2.1 m. How many m do 7 of them make in all? =
  25. 25.1/9 × 1/3 =
  26. 26.One jug of milk holds 9.5 L. How many L do 10 of them make in all? =
  27. 27.2.4 ÷ 0.8 =
  28. 28.5/7 × 3/5 =
  29. 29.1/2 × 1/2 =
  30. 30.1/8 × 5/9 =
  31. 31.1/2 × 5 =
  32. 32.8.7 × 0.9 =
  33. 33.7/8 × 12 =
  34. 34.One roll of ribbon has 2.3 m. How many m do 3 of them make in all? =
  35. 35.34.5 ÷ 5 =
  36. 36.1/3 ÷ 5/6 =
  37. 37.1/7 × 1/4 =
  38. 38.8.2 × 0.9 =
  39. 39.7/8 ÷ 1/7 =
  40. 40.1/6 × 1/7 =

Answer key

  1. 32/27
  2. 77
  3. 2/21
  4. 32/5
  5. 30/7
  6. 25/36
  7. 14
  8. 20/3
  9. 15/4
  10. 9/14
  11. 16/7
  12. 5/72
  13. 53.9
  14. 18/35
  15. 7
  16. 8.52
  17. 9
  18. 5/8
  19. 6
  20. 6.9
  21. 15
  22. 18/35
  23. 35/72
  24. 14.7
  25. 1/27
  26. 95
  27. 3
  28. 3/7
  29. 1/4
  30. 5/72
  31. 5/2
  32. 7.83
  33. 21/2
  34. 6.9
  35. 6.9
  36. 2/5
  37. 1/28
  38. 7.38
  39. 49/8
  40. 1/42

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