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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 333 · 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 × 2/3 =
  2. 2.One packet of rice weighs 2.7 kg. How many kg do 7 of them make in all? =
  3. 3.1/7 × 11 =
  4. 4.1/9 ÷ 1/3 =
  5. 5.One bottle of oil holds 1.5 L. How many L do 6 of them make in all? =
  6. 6.3.32 ÷ 2 =
  7. 7.1.8 × 0.2 =
  8. 8.One roll of ribbon has 2.2 m. How many m do 5 of them make in all? =
  9. 9.3/5 ÷ 3/4 =
  10. 10.3/4 × 8 =
  11. 11.2.2 × 0.3 =
  12. 12.4.2 ÷ 0.7 =
  13. 13.18.74 ÷ 2 =
  14. 14.One bag of potatoes weighs 2.4 kg. How many kg do 11 of them make in all? =
  15. 15.24.9 ÷ 5 =
  16. 16.3/8 ÷ 1/2 =
  17. 17.1/8 ÷ 1/3 =
  18. 18.1/6 × 1/7 =
  19. 19.1/6 × 10 =
  20. 20.1/6 ÷ 1/9 =
  21. 21.One packet of rice weighs 2.6 kg. How many kg do 7 of them make in all? =
  22. 22.4/5 × 5/7 =
  23. 23.5/7 ÷ 1/5 =
  24. 24.6/7 × 1/6 =
  25. 25.1/3 × 2 =
  26. 26.One packet of rice weighs 3.4 kg. How many kg do 5 of them make in all? =
  27. 27.7/8 × 1/4 =
  28. 28.One bag of potatoes weighs 6 kg. How many kg do 4 of them make in all? =
  29. 29.One bottle of oil holds 2.1 L. How many L do 7 of them make in all? =
  30. 30.One roll of ribbon has 2.1 m. How many m do 10 of them make in all? =
  31. 31.3/7 × 5/7 =
  32. 32.5/7 ÷ 5/8 =
  33. 33.2/3 × 4/7 =
  34. 34.One roll of ribbon has 5.6 m. How many m do 3 of them make in all? =
  35. 35.10.62 ÷ 2 =
  36. 36.2/9 × 11 =
  37. 37.3/7 × 14 =
  38. 38.3/4 × 2 =
  39. 39.4/9 × 13 =
  40. 40.One roll of ribbon has 4.1 m. How many m do 8 of them make in all? =

Answer key

  1. 10/27
  2. 18.9
  3. 11/7
  4. 1/3
  5. 9
  6. 1.66
  7. 0.36
  8. 11
  9. 4/5
  10. 6
  11. 0.66
  12. 6
  13. 9.37
  14. 26.4
  15. 4.98
  16. 3/4
  17. 3/8
  18. 1/42
  19. 5/3
  20. 3/2
  21. 18.2
  22. 4/7
  23. 25/7
  24. 1/7
  25. 2/3
  26. 17
  27. 7/32
  28. 24
  29. 14.7
  30. 21
  31. 15/49
  32. 8/7
  33. 8/21
  34. 16.8
  35. 5.31
  36. 22/9
  37. 6
  38. 3/2
  39. 52/9
  40. 32.8

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