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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 359 · 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 jug of milk holds 3.2 L. How many L do 7 of them make in all? =
  2. 2.5/6 ÷ 8/9 =
  3. 3.5/7 × 5 =
  4. 4.One bag of potatoes weighs 2.8 kg. How many kg do 6 of them make in all? =
  5. 5.2/3 × 1/5 =
  6. 6.7/9 ÷ 2/3 =
  7. 7.2.7 × 0.2 =
  8. 8.1.7 × 0.5 =
  9. 9.1.24 ÷ 4 =
  10. 10.1/2 × 2/9 =
  11. 11.One bag of potatoes weighs 7.5 kg. How many kg do 9 of them make in all? =
  12. 12.2/5 × 15 =
  13. 13.3.2 × 0.3 =
  14. 14.5/9 × 2/3 =
  15. 15.One packet of rice weighs 4.4 kg. How many kg do 5 of them make in all? =
  16. 16.2/7 × 2/3 =
  17. 17.1/8 × 4 =
  18. 18.2/3 × 13 =
  19. 19.5/9 × 3/4 =
  20. 20.4/5 × 7/8 =
  21. 21.One packet of rice weighs 9.1 kg. How many kg do 4 of them make in all? =
  22. 22.2.4 ÷ 0.2 =
  23. 23.9.12 ÷ 2 =
  24. 24.1/4 ÷ 1/7 =
  25. 25.One roll of ribbon has 4.6 m. How many m do 2 of them make in all? =
  26. 26.6/7 ÷ 2/5 =
  27. 27.0.8 ÷ 0.4 =
  28. 28.2/9 × 5/9 =
  29. 29.37.45 ÷ 5 =
  30. 30.1.2 ÷ 0.3 =
  31. 31.6/7 × 5 =
  32. 32.17.08 ÷ 4 =
  33. 33.7/8 ÷ 1/3 =
  34. 34.36.88 ÷ 4 =
  35. 35.2.8 × 0.2 =
  36. 36.0.3 × 0.2 =
  37. 37.5/8 ÷ 6/7 =
  38. 38.One packet of rice weighs 4.4 kg. How many kg do 12 of them make in all? =
  39. 39.4/5 × 2/9 =
  40. 40.1/3 ÷ 1/2 =

Answer key

  1. 22.4
  2. 15/16
  3. 25/7
  4. 16.8
  5. 2/15
  6. 7/6
  7. 0.54
  8. 0.85
  9. 0.31
  10. 1/9
  11. 67.5
  12. 6
  13. 0.96
  14. 10/27
  15. 22
  16. 4/21
  17. 1/2
  18. 26/3
  19. 5/12
  20. 7/10
  21. 36.4
  22. 12
  23. 4.56
  24. 7/4
  25. 9.2
  26. 15/7
  27. 2
  28. 10/81
  29. 7.49
  30. 4
  31. 30/7
  32. 4.27
  33. 21/8
  34. 9.22
  35. 0.56
  36. 0.06
  37. 35/48
  38. 52.8
  39. 8/45
  40. 2/3

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