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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 92 · 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 bottle of oil holds 7 L. How many L do 4 of them make in all? =
  2. 2.8.1 × 0.8 =
  3. 3.2.8 ÷ 0.4 =
  4. 4.6.3 ÷ 0.9 =
  5. 5.5/6 × 3/8 =
  6. 6.2/3 ÷ 5/7 =
  7. 7.3/7 × 1/8 =
  8. 8.1/2 ÷ 4/7 =
  9. 9.0.4 × 0.3 =
  10. 10.5/7 ÷ 3/8 =
  11. 11.12.2 ÷ 4 =
  12. 12.One roll of ribbon has 3.3 m. How many m do 10 of them make in all? =
  13. 13.9.6 × 0.3 =
  14. 14.3/4 × 5/7 =
  15. 15.5/7 × 14 =
  16. 16.1.8 ÷ 0.2 =
  17. 17.5/8 ÷ 2/5 =
  18. 18.3/7 × 1/5 =
  19. 19.5/7 × 4 =
  20. 20.9.7 × 0.6 =
  21. 21.3/5 × 15 =
  22. 22.1.9 × 0.4 =
  23. 23.One bottle of oil holds 7.1 L. How many L do 5 of them make in all? =
  24. 24.2/9 × 3/5 =
  25. 25.6 ÷ 0.5 =
  26. 26.56.96 ÷ 8 =
  27. 27.1.2 × 0.7 =
  28. 28.2/5 × 7 =
  29. 29.1/6 ÷ 2/9 =
  30. 30.7.2 ÷ 0.9 =
  31. 31.1/9 × 4/7 =
  32. 32.1/9 × 3/5 =
  33. 33.8.2 × 0.7 =
  34. 34.4.2 ÷ 0.7 =
  35. 35.One packet of rice weighs 7 kg. How many kg do 4 of them make in all? =
  36. 36.3.1 × 0.2 =
  37. 37.4/7 × 12 =
  38. 38.3.6 ÷ 0.9 =
  39. 39.2/9 ÷ 1/9 =
  40. 40.4/7 × 3 =

Answer key

  1. 28
  2. 6.48
  3. 7
  4. 7
  5. 5/16
  6. 14/15
  7. 3/56
  8. 7/8
  9. 0.12
  10. 40/21
  11. 3.05
  12. 33
  13. 2.88
  14. 15/28
  15. 10
  16. 9
  17. 25/16
  18. 3/35
  19. 20/7
  20. 5.82
  21. 9
  22. 0.76
  23. 35.5
  24. 2/15
  25. 12
  26. 7.12
  27. 0.84
  28. 14/5
  29. 3/4
  30. 8
  31. 4/63
  32. 1/15
  33. 5.74
  34. 6
  35. 28
  36. 0.62
  37. 48/7
  38. 4
  39. 2
  40. 12/7

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