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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 350 · 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 ÷ 1/5 =
  2. 2.1/9 × 7/8 =
  3. 3.1/7 × 3 =
  4. 4.8/9 × 5 =
  5. 5.1/3 × 14 =
  6. 6.8.5 ÷ 5 =
  7. 7.One jug of milk holds 1.1 L. How many L do 5 of them make in all? =
  8. 8.6.36 ÷ 4 =
  9. 9.76.72 ÷ 8 =
  10. 10.5.4 ÷ 0.6 =
  11. 11.One bottle of oil holds 6 L. How many L do 11 of them make in all? =
  12. 12.7.96 ÷ 2 =
  13. 13.1.8 × 0.6 =
  14. 14.14.36 ÷ 2 =
  15. 15.8.42 ÷ 2 =
  16. 16.One packet of rice weighs 1.4 kg. How many kg do 3 of them make in all? =
  17. 17.2/3 × 5/7 =
  18. 18.8.4 × 0.3 =
  19. 19.3/4 × 2 =
  20. 20.One bag of potatoes weighs 5.3 kg. How many kg do 2 of them make in all? =
  21. 21.One packet of rice weighs 4.5 kg. How many kg do 8 of them make in all? =
  22. 22.1/6 ÷ 3/8 =
  23. 23.5/6 × 13 =
  24. 24.1.2 × 0.6 =
  25. 25.4/9 × 5 =
  26. 26.7/9 × 5/6 =
  27. 27.1/2 × 5/7 =
  28. 28.2.1 × 0.7 =
  29. 29.One packet of rice weighs 2.7 kg. How many kg do 12 of them make in all? =
  30. 30.35.12 ÷ 4 =
  31. 31.One bag of potatoes weighs 9.1 kg. How many kg do 9 of them make in all? =
  32. 32.15.28 ÷ 2 =
  33. 33.5/9 × 2 =
  34. 34.1/8 × 3/5 =
  35. 35.One packet of rice weighs 7.8 kg. How many kg do 10 of them make in all? =
  36. 36.5/8 × 2/3 =
  37. 37.3/7 × 3 =
  38. 38.4/7 × 5/8 =
  39. 39.6.3 ÷ 0.7 =
  40. 40.1/6 ÷ 5/8 =

Answer key

  1. 25/9
  2. 7/72
  3. 3/7
  4. 40/9
  5. 14/3
  6. 1.7
  7. 5.5
  8. 1.59
  9. 9.59
  10. 9
  11. 66
  12. 3.98
  13. 1.08
  14. 7.18
  15. 4.21
  16. 4.2
  17. 10/21
  18. 2.52
  19. 3/2
  20. 10.6
  21. 36
  22. 4/9
  23. 65/6
  24. 0.72
  25. 20/9
  26. 35/54
  27. 5/14
  28. 1.47
  29. 32.4
  30. 8.78
  31. 81.9
  32. 7.64
  33. 10/9
  34. 3/40
  35. 78
  36. 5/12
  37. 9/7
  38. 5/14
  39. 9
  40. 4/15

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