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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 477 · 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. 1.1.8 × 0.8 =
  2. 2.4/9 × 2/5 =
  3. 3.11.42 ÷ 2 =
  4. 4.3.7 × 0.4 =
  5. 5.8/9 ÷ 1/8 =
  6. 6.One roll of ribbon has 7.8 m. How many m do 10 of them make in all? =
  7. 7.6.82 ÷ 2 =
  8. 8.1.5 ÷ 0.3 =
  9. 9.5.2 × 0.2 =
  10. 10.0.8 × 0.4 =
  11. 11.1/6 × 6/7 =
  12. 12.1/2 × 6/7 =
  13. 13.5/9 × 1/9 =
  14. 14.5/6 × 14 =
  15. 15.4/5 × 10 =
  16. 16.One bag of potatoes weighs 9.1 kg. How many kg do 9 of them make in all? =
  17. 17.2/9 × 7/8 =
  18. 18.1/9 × 3/5 =
  19. 19.4/7 × 5 =
  20. 20.2/5 × 15 =
  21. 21.39.4 ÷ 4 =
  22. 22.9.5 × 0.2 =
  23. 23.5/7 × 15 =
  24. 24.1/2 × 1/3 =
  25. 25.3/8 × 15 =
  26. 26.5/9 × 8/9 =
  27. 27.6/7 × 2/5 =
  28. 28.One bag of potatoes weighs 1.7 kg. How many kg do 5 of them make in all? =
  29. 29.1/6 × 3/4 =
  30. 30.One packet of rice weighs 8 kg. How many kg do 2 of them make in all? =
  31. 31.6.2 × 0.2 =
  32. 32.3.2 ÷ 0.8 =
  33. 33.73.92 ÷ 8 =
  34. 34.2/9 × 2/7 =
  35. 35.2/3 ÷ 3/5 =
  36. 36.4/7 × 1/2 =
  37. 37.2/5 × 8 =
  38. 38.One jug of milk holds 3.2 L. How many L do 10 of them make in all? =
  39. 39.One bottle of oil holds 1.9 L. How many L do 2 of them make in all? =
  40. 40.13.95 ÷ 5 =

Answer key

  1. 1.44
  2. 8/45
  3. 5.71
  4. 1.48
  5. 64/9
  6. 78
  7. 3.41
  8. 5
  9. 1.04
  10. 0.32
  11. 1/7
  12. 3/7
  13. 5/81
  14. 35/3
  15. 8
  16. 81.9
  17. 7/36
  18. 1/15
  19. 20/7
  20. 6
  21. 9.85
  22. 1.9
  23. 75/7
  24. 1/6
  25. 45/8
  26. 40/81
  27. 12/35
  28. 8.5
  29. 1/8
  30. 16
  31. 1.24
  32. 4
  33. 9.24
  34. 4/63
  35. 10/9
  36. 2/7
  37. 16/5
  38. 32
  39. 3.8
  40. 2.79

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