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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 260 · 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.One packet of rice weighs 6.9 kg. How many kg do 10 of them make in all? =
  2. 2.1/2 × 6/7 =
  3. 3.1/5 × 1/2 =
  4. 4.3 ÷ 0.5 =
  5. 5.4.2 × 0.3 =
  6. 6.6 ÷ 0.5 =
  7. 7.2/9 × 5/6 =
  8. 8.3.5 ÷ 0.5 =
  9. 9.One bottle of oil holds 8.8 L. How many L do 5 of them make in all? =
  10. 10.2/3 × 13 =
  11. 11.3/4 × 6/7 =
  12. 12.13.2 ÷ 5 =
  13. 13.8/9 × 11 =
  14. 14.9 ÷ 0.9 =
  15. 15.6.3 × 0.5 =
  16. 16.One roll of ribbon has 9.9 m. How many m do 11 of them make in all? =
  17. 17.5.2 × 0.9 =
  18. 18.7.2 ÷ 0.8 =
  19. 19.1/2 × 2/9 =
  20. 20.8 ÷ 0.8 =
  21. 21.3/7 ÷ 2/7 =
  22. 22.1/3 ÷ 3/7 =
  23. 23.One jug of milk holds 8.5 L. How many L do 2 of them make in all? =
  24. 24.8.6 × 0.8 =
  25. 25.3/7 × 1/8 =
  26. 26.1/7 × 2 =
  27. 27.1.2 ÷ 0.3 =
  28. 28.One jug of milk holds 2.5 L. How many L do 7 of them make in all? =
  29. 29.5.8 × 0.6 =
  30. 30.2.8 ÷ 0.7 =
  31. 31.4.3 × 0.9 =
  32. 32.5/8 × 3/8 =
  33. 33.7/9 × 12 =
  34. 34.One roll of ribbon has 2.1 m. How many m do 12 of them make in all? =
  35. 35.5/9 ÷ 2/7 =
  36. 36.10.8 ÷ 0.9 =
  37. 37.5/7 ÷ 7/9 =
  38. 38.One roll of ribbon has 2.4 m. How many m do 5 of them make in all? =
  39. 39.1.9 × 0.3 =
  40. 40.One packet of rice weighs 7 kg. How many kg do 10 of them make in all? =

Answer key

  1. 69
  2. 3/7
  3. 1/10
  4. 6
  5. 1.26
  6. 12
  7. 5/27
  8. 7
  9. 44
  10. 26/3
  11. 9/14
  12. 2.64
  13. 88/9
  14. 10
  15. 3.15
  16. 108.9
  17. 4.68
  18. 9
  19. 1/9
  20. 10
  21. 3/2
  22. 7/9
  23. 17
  24. 6.88
  25. 3/56
  26. 2/7
  27. 4
  28. 17.5
  29. 3.48
  30. 4
  31. 3.87
  32. 15/64
  33. 28/3
  34. 25.2
  35. 35/18
  36. 12
  37. 45/49
  38. 12
  39. 0.57
  40. 70

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