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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 537 · 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 2 kg. How many kg do 2 of them make in all? =
  2. 2.7.7 ÷ 5 =
  3. 3.8/9 ÷ 6/7 =
  4. 4.1/2 × 9 =
  5. 5.1/5 × 10 =
  6. 6.5/7 ÷ 5/6 =
  7. 7.5/9 × 1/7 =
  8. 8.One bottle of oil holds 3.8 L. How many L do 7 of them make in all? =
  9. 9.2.4 × 0.5 =
  10. 10.2.4 × 0.3 =
  11. 11.One jug of milk holds 3.4 L. How many L do 5 of them make in all? =
  12. 12.8/9 ÷ 4/7 =
  13. 13.8/9 ÷ 1/4 =
  14. 14.1.6 ÷ 0.4 =
  15. 15.2.94 ÷ 2 =
  16. 16.2/5 × 9 =
  17. 17.5/6 × 2 =
  18. 18.One packet of rice weighs 3.9 kg. How many kg do 6 of them make in all? =
  19. 19.3/5 ÷ 1/8 =
  20. 20.19.12 ÷ 8 =
  21. 21.5/8 × 5 =
  22. 22.1/6 × 5 =
  23. 23.1/4 × 14 =
  24. 24.3/4 × 1/7 =
  25. 25.27.25 ÷ 5 =
  26. 26.3.5 ÷ 0.7 =
  27. 27.0.4 ÷ 0.2 =
  28. 28.1.48 ÷ 4 =
  29. 29.2.4 ÷ 0.3 =
  30. 30.2.7 ÷ 0.9 =
  31. 31.1/2 × 1/4 =
  32. 32.9.2 × 0.5 =
  33. 33.1.6 × 0.4 =
  34. 34.2/3 × 8/9 =
  35. 35.3/5 × 7 =
  36. 36.4.8 ÷ 0.4 =
  37. 37.One roll of ribbon has 8.6 m. How many m do 4 of them make in all? =
  38. 38.4/7 × 12 =
  39. 39.3/7 × 4/9 =
  40. 40.2.3 × 0.4 =

Answer key

  1. 4
  2. 1.54
  3. 28/27
  4. 9/2
  5. 2
  6. 6/7
  7. 5/63
  8. 26.6
  9. 1.2
  10. 0.72
  11. 17
  12. 14/9
  13. 32/9
  14. 4
  15. 1.47
  16. 18/5
  17. 5/3
  18. 23.4
  19. 24/5
  20. 2.39
  21. 25/8
  22. 5/6
  23. 7/2
  24. 3/28
  25. 5.45
  26. 5
  27. 2
  28. 0.37
  29. 8
  30. 3
  31. 1/8
  32. 4.6
  33. 0.64
  34. 16/27
  35. 21/5
  36. 12
  37. 34.4
  38. 48/7
  39. 4/21
  40. 0.92

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