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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 519 · 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. 1.6.24 ÷ 4 =
  2. 2.7/8 × 5/6 =
  3. 3.1/2 × 4/7 =
  4. 4.2/5 ÷ 2/5 =
  5. 5.2.9 × 0.6 =
  6. 6.One roll of ribbon has 6.1 m. How many m do 3 of them make in all? =
  7. 7.1/4 × 5/7 =
  8. 8.29.96 ÷ 4 =
  9. 9.2/9 × 1/7 =
  10. 10.6.6 ÷ 0.6 =
  11. 11.7.2 × 0.7 =
  12. 12.7/9 × 10 =
  13. 13.One roll of ribbon has 9.5 m. How many m do 9 of them make in all? =
  14. 14.One packet of rice weighs 7.8 kg. How many kg do 6 of them make in all? =
  15. 15.50 ÷ 8 =
  16. 16.4.8 ÷ 0.6 =
  17. 17.3.3 × 0.9 =
  18. 18.One bottle of oil holds 7.8 L. How many L do 8 of them make in all? =
  19. 19.8.4 ÷ 0.7 =
  20. 20.One bottle of oil holds 2.6 L. How many L do 12 of them make in all? =
  21. 21.7/8 × 1/2 =
  22. 22.3/4 ÷ 5/6 =
  23. 23.2/5 × 14 =
  24. 24.6/7 × 4 =
  25. 25.28.32 ÷ 8 =
  26. 26.1/6 × 5/7 =
  27. 27.7.8 × 0.7 =
  28. 28.2/7 × 1/3 =
  29. 29.2.8 ÷ 0.4 =
  30. 30.1/2 × 4/9 =
  31. 31.7/8 × 3/4 =
  32. 32.One packet of rice weighs 1.2 kg. How many kg do 9 of them make in all? =
  33. 33.3/5 × 2 =
  34. 34.3/8 ÷ 4/7 =
  35. 35.One bag of potatoes weighs 3.1 kg. How many kg do 12 of them make in all? =
  36. 36.4/7 × 2/7 =
  37. 37.8.7 × 0.5 =
  38. 38.One jug of milk holds 4.1 L. How many L do 11 of them make in all? =
  39. 39.1/6 ÷ 4/9 =
  40. 40.1.2 × 0.5 =

Answer key

  1. 1.56
  2. 35/48
  3. 2/7
  4. 1
  5. 1.74
  6. 18.3
  7. 5/28
  8. 7.49
  9. 2/63
  10. 11
  11. 5.04
  12. 70/9
  13. 85.5
  14. 46.8
  15. 6.25
  16. 8
  17. 2.97
  18. 62.4
  19. 12
  20. 31.2
  21. 7/16
  22. 9/10
  23. 28/5
  24. 24/7
  25. 3.54
  26. 5/42
  27. 5.46
  28. 2/21
  29. 7
  30. 2/9
  31. 21/32
  32. 10.8
  33. 6/5
  34. 21/32
  35. 37.2
  36. 8/49
  37. 4.35
  38. 45.1
  39. 3/8
  40. 0.6

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