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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 153 · 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. 1.33.8 ÷ 5 =
  2. 2.2/3 ÷ 8/9 =
  3. 3.One roll of ribbon has 3.8 m. How many m do 4 of them make in all? =
  4. 4.1/3 × 14 =
  5. 5.One bag of potatoes weighs 1.4 kg. How many kg do 5 of them make in all? =
  6. 6.6.3 ÷ 0.7 =
  7. 7.One bag of potatoes weighs 9.5 kg. How many kg do 4 of them make in all? =
  8. 8.One jug of milk holds 9.8 L. How many L do 11 of them make in all? =
  9. 9.3/5 × 2/7 =
  10. 10.1/8 × 3/4 =
  11. 11.4/9 × 4/9 =
  12. 12.1/9 × 8/9 =
  13. 13.1/4 ÷ 6/7 =
  14. 14.3/7 × 6 =
  15. 15.1/6 × 1/2 =
  16. 16.One packet of rice weighs 6.1 kg. How many kg do 6 of them make in all? =
  17. 17.47.84 ÷ 8 =
  18. 18.4/7 × 6 =
  19. 19.1/4 ÷ 3/4 =
  20. 20.4/5 × 3 =
  21. 21.4.26 ÷ 2 =
  22. 22.6/7 × 3/7 =
  23. 23.One jug of milk holds 2.5 L. How many L do 6 of them make in all? =
  24. 24.1/9 × 2/9 =
  25. 25.One packet of rice weighs 7.6 kg. How many kg do 10 of them make in all? =
  26. 26.5/6 × 3 =
  27. 27.1/7 ÷ 7/9 =
  28. 28.One bottle of oil holds 4.9 L. How many L do 6 of them make in all? =
  29. 29.One roll of ribbon has 3.1 m. How many m do 5 of them make in all? =
  30. 30.8 ÷ 0.8 =
  31. 31.3/7 ÷ 4/9 =
  32. 32.One bag of potatoes weighs 6.5 kg. How many kg do 6 of them make in all? =
  33. 33.One packet of rice weighs 4.8 kg. How many kg do 4 of them make in all? =
  34. 34.2.1 ÷ 0.7 =
  35. 35.14.4 ÷ 5 =
  36. 36.15.05 ÷ 5 =
  37. 37.28.24 ÷ 8 =
  38. 38.One bottle of oil holds 6.7 L. How many L do 10 of them make in all? =
  39. 39.4.62 ÷ 2 =
  40. 40.One jug of milk holds 3.9 L. How many L do 5 of them make in all? =

Answer key

  1. 6.76
  2. 3/4
  3. 15.2
  4. 14/3
  5. 7
  6. 9
  7. 38
  8. 107.8
  9. 6/35
  10. 3/32
  11. 16/81
  12. 8/81
  13. 7/24
  14. 18/7
  15. 1/12
  16. 36.6
  17. 5.98
  18. 24/7
  19. 1/3
  20. 12/5
  21. 2.13
  22. 18/49
  23. 15
  24. 2/81
  25. 76
  26. 5/2
  27. 9/49
  28. 29.4
  29. 15.5
  30. 10
  31. 27/28
  32. 39
  33. 19.2
  34. 3
  35. 2.88
  36. 3.01
  37. 3.53
  38. 67
  39. 2.31
  40. 19.5

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