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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 79 · 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. 1.7/9 × 10 =
  2. 2.1/8 ÷ 5/8 =
  3. 3.One bag of potatoes weighs 2.6 kg. How many kg do 4 of them make in all? =
  4. 4.One bottle of oil holds 3 L. How many L do 4 of them make in all? =
  5. 5.2/9 × 2 =
  6. 6.1/3 × 3/5 =
  7. 7.24.32 ÷ 4 =
  8. 8.1/8 × 9 =
  9. 9.3.3 ÷ 0.3 =
  10. 10.4.24 ÷ 2 =
  11. 11.One bottle of oil holds 9.5 L. How many L do 4 of them make in all? =
  12. 12.One bag of potatoes weighs 2.5 kg. How many kg do 8 of them make in all? =
  13. 13.4.56 ÷ 8 =
  14. 14.1.2 × 0.4 =
  15. 15.2/7 ÷ 5/9 =
  16. 16.3.2 ÷ 0.8 =
  17. 17.1.5 ÷ 2 =
  18. 18.3/5 × 8/9 =
  19. 19.1.2 ÷ 0.2 =
  20. 20.8.1 × 0.4 =
  21. 21.One packet of rice weighs 2.7 kg. How many kg do 7 of them make in all? =
  22. 22.One bag of potatoes weighs 2.7 kg. How many kg do 7 of them make in all? =
  23. 23.1/6 × 6/7 =
  24. 24.15.82 ÷ 2 =
  25. 25.2.7 ÷ 0.9 =
  26. 26.4/5 × 7/8 =
  27. 27.1/4 ÷ 5/9 =
  28. 28.One jug of milk holds 9.5 L. How many L do 5 of them make in all? =
  29. 29.2/9 ÷ 6/7 =
  30. 30.1/7 × 3/5 =
  31. 31.1.3 × 0.4 =
  32. 32.1.5 ÷ 0.3 =
  33. 33.3/4 × 1/5 =
  34. 34.3.5 ÷ 0.7 =
  35. 35.1/5 ÷ 3/8 =
  36. 36.One bottle of oil holds 3.8 L. How many L do 4 of them make in all? =
  37. 37.8/9 ÷ 5/8 =
  38. 38.One roll of ribbon has 4.5 m. How many m do 10 of them make in all? =
  39. 39.2 ÷ 0.4 =
  40. 40.7/8 × 2/7 =

Answer key

  1. 70/9
  2. 1/5
  3. 10.4
  4. 12
  5. 4/9
  6. 1/5
  7. 6.08
  8. 9/8
  9. 11
  10. 2.12
  11. 38
  12. 20
  13. 0.57
  14. 0.48
  15. 18/35
  16. 4
  17. 0.75
  18. 8/15
  19. 6
  20. 3.24
  21. 18.9
  22. 18.9
  23. 1/7
  24. 7.91
  25. 3
  26. 7/10
  27. 9/20
  28. 47.5
  29. 7/27
  30. 3/35
  31. 0.52
  32. 5
  33. 3/20
  34. 5
  35. 8/15
  36. 15.2
  37. 64/45
  38. 45
  39. 5
  40. 1/4

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