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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 429 · 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. 1.1/5 ÷ 3/4 =
  2. 2.One roll of ribbon has 1.8 m. How many m do 8 of them make in all? =
  3. 3.1/9 ÷ 2/9 =
  4. 4.One jug of milk holds 8.6 L. How many L do 3 of them make in all? =
  5. 5.7/8 × 14 =
  6. 6.7/9 ÷ 2/5 =
  7. 7.19.36 ÷ 2 =
  8. 8.7/9 ÷ 4/9 =
  9. 9.1.8 ÷ 0.9 =
  10. 10.One bag of potatoes weighs 7.9 kg. How many kg do 8 of them make in all? =
  11. 11.1.7 × 0.7 =
  12. 12.1.5 ÷ 0.5 =
  13. 13.3/8 × 15 =
  14. 14.4/9 × 4 =
  15. 15.5/9 × 5 =
  16. 16.38.5 ÷ 5 =
  17. 17.4/9 × 1/6 =
  18. 18.2/5 ÷ 2/9 =
  19. 19.1.2 ÷ 0.2 =
  20. 20.2/5 × 1/2 =
  21. 21.One bag of potatoes weighs 4.5 kg. How many kg do 6 of them make in all? =
  22. 22.5/7 ÷ 1/5 =
  23. 23.One bottle of oil holds 6.4 L. How many L do 12 of them make in all? =
  24. 24.2/9 × 5 =
  25. 25.1.8 ÷ 0.2 =
  26. 26.1.6 × 0.9 =
  27. 27.2/7 × 8 =
  28. 28.One packet of rice weighs 1.5 kg. How many kg do 2 of them make in all? =
  29. 29.3.1 × 0.7 =
  30. 30.3.3 × 0.2 =
  31. 31.One bottle of oil holds 5.8 L. How many L do 5 of them make in all? =
  32. 32.1/2 × 10 =
  33. 33.1/6 × 6 =
  34. 34.11.92 ÷ 8 =
  35. 35.2/3 × 6 =
  36. 36.4 ÷ 0.5 =
  37. 37.One packet of rice weighs 9.9 kg. How many kg do 2 of them make in all? =
  38. 38.3/5 × 8 =
  39. 39.3/5 ÷ 3/4 =
  40. 40.0.8 ÷ 0.2 =

Answer key

  1. 4/15
  2. 14.4
  3. 1/2
  4. 25.8
  5. 49/4
  6. 35/18
  7. 9.68
  8. 7/4
  9. 2
  10. 63.2
  11. 1.19
  12. 3
  13. 45/8
  14. 16/9
  15. 25/9
  16. 7.7
  17. 2/27
  18. 9/5
  19. 6
  20. 1/5
  21. 27
  22. 25/7
  23. 76.8
  24. 10/9
  25. 9
  26. 1.44
  27. 16/7
  28. 3
  29. 2.17
  30. 0.66
  31. 29
  32. 5
  33. 1
  34. 1.49
  35. 4
  36. 8
  37. 19.8
  38. 24/5
  39. 4/5
  40. 4

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