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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 106 · 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. 1.1/6 ÷ 3/8 =
  2. 2.One packet of rice weighs 7 kg. How many kg do 10 of them make in all? =
  3. 3.0.8 ÷ 0.2 =
  4. 4.1.1 × 0.3 =
  5. 5.30.4 ÷ 4 =
  6. 6.1/4 × 8/9 =
  7. 7.0.4 ÷ 0.2 =
  8. 8.2.8 ÷ 0.7 =
  9. 9.3/5 ÷ 5/6 =
  10. 10.0.9 × 0.7 =
  11. 11.2.3 × 0.2 =
  12. 12.2/5 × 5/6 =
  13. 13.1/3 × 3/5 =
  14. 14.1/2 ÷ 5/6 =
  15. 15.3/5 × 4 =
  16. 16.7.1 × 0.2 =
  17. 17.One roll of ribbon has 9.2 m. How many m do 8 of them make in all? =
  18. 18.One roll of ribbon has 8.5 m. How many m do 8 of them make in all? =
  19. 19.One roll of ribbon has 9.7 m. How many m do 11 of them make in all? =
  20. 20.34.96 ÷ 4 =
  21. 21.12.8 ÷ 5 =
  22. 22.7.6 × 0.5 =
  23. 23.One packet of rice weighs 5 kg. How many kg do 8 of them make in all? =
  24. 24.31.84 ÷ 4 =
  25. 25.2.4 ÷ 0.2 =
  26. 26.24 ÷ 5 =
  27. 27.2.3 × 0.4 =
  28. 28.9.5 × 0.2 =
  29. 29.4/7 × 6/7 =
  30. 30.1/4 × 15 =
  31. 31.One roll of ribbon has 5 m. How many m do 3 of them make in all? =
  32. 32.8/9 ÷ 7/9 =
  33. 33.6.6 × 0.8 =
  34. 34.15.98 ÷ 2 =
  35. 35.2.1 × 0.2 =
  36. 36.2.6 × 0.7 =
  37. 37.1.2 ÷ 0.3 =
  38. 38.1/2 × 5/9 =
  39. 39.2/7 × 2/7 =
  40. 40.One bottle of oil holds 8.5 L. How many L do 9 of them make in all? =

Answer key

  1. 4/9
  2. 70
  3. 4
  4. 0.33
  5. 7.6
  6. 2/9
  7. 2
  8. 4
  9. 18/25
  10. 0.63
  11. 0.46
  12. 1/3
  13. 1/5
  14. 3/5
  15. 12/5
  16. 1.42
  17. 73.6
  18. 68
  19. 106.7
  20. 8.74
  21. 2.56
  22. 3.8
  23. 40
  24. 7.96
  25. 12
  26. 4.8
  27. 0.92
  28. 1.9
  29. 24/49
  30. 15/4
  31. 15
  32. 8/7
  33. 5.28
  34. 7.99
  35. 0.42
  36. 1.82
  37. 4
  38. 5/18
  39. 4/49
  40. 76.5

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