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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 319 · 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. 1.19.08 ÷ 2 =
  2. 2.One jug of milk holds 9.9 L. How many L do 11 of them make in all? =
  3. 3.1/9 × 1/7 =
  4. 4.1/5 ÷ 1/8 =
  5. 5.1.5 ÷ 0.3 =
  6. 6.7.28 ÷ 4 =
  7. 7.1/4 × 10 =
  8. 8.1/2 × 3/5 =
  9. 9.2.3 × 0.5 =
  10. 10.1/5 × 5/8 =
  11. 11.3/4 × 8 =
  12. 12.4.6 × 0.7 =
  13. 13.5/9 ÷ 4/5 =
  14. 14.1/9 × 13 =
  15. 15.6/7 × 9 =
  16. 16.One packet of rice weighs 7 kg. How many kg do 7 of them make in all? =
  17. 17.75.76 ÷ 8 =
  18. 18.17.1 ÷ 2 =
  19. 19.6.3 ÷ 0.9 =
  20. 20.1/8 × 5/6 =
  21. 21.32.2 ÷ 5 =
  22. 22.0.8 ÷ 0.2 =
  23. 23.5.1 × 0.3 =
  24. 24.3.6 ÷ 0.6 =
  25. 25.1/7 ÷ 3/8 =
  26. 26.43.44 ÷ 8 =
  27. 27.One packet of rice weighs 6.8 kg. How many kg do 12 of them make in all? =
  28. 28.5.1 × 0.4 =
  29. 29.One jug of milk holds 5.2 L. How many L do 11 of them make in all? =
  30. 30.7/9 ÷ 3/5 =
  31. 31.5/7 × 8/9 =
  32. 32.One roll of ribbon has 3.4 m. How many m do 4 of them make in all? =
  33. 33.1/3 ÷ 6/7 =
  34. 34.0.8 ÷ 0.4 =
  35. 35.1/2 × 2/5 =
  36. 36.5.8 ÷ 4 =
  37. 37.5.2 × 0.9 =
  38. 38.0.6 ÷ 0.3 =
  39. 39.1.22 ÷ 2 =
  40. 40.3/4 ÷ 4/5 =

Answer key

  1. 9.54
  2. 108.9
  3. 1/63
  4. 8/5
  5. 5
  6. 1.82
  7. 5/2
  8. 3/10
  9. 1.15
  10. 1/8
  11. 6
  12. 3.22
  13. 25/36
  14. 13/9
  15. 54/7
  16. 49
  17. 9.47
  18. 8.55
  19. 7
  20. 5/48
  21. 6.44
  22. 4
  23. 1.53
  24. 6
  25. 8/21
  26. 5.43
  27. 81.6
  28. 2.04
  29. 57.2
  30. 35/27
  31. 40/63
  32. 13.6
  33. 7/18
  34. 2
  35. 1/5
  36. 1.45
  37. 4.68
  38. 2
  39. 0.61
  40. 15/16

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