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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 548 · 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. 1.5/6 × 4/7 =
  2. 2.1.8 × 0.3 =
  3. 3.4/5 × 8 =
  4. 4.1/4 × 2/5 =
  5. 5.5/7 × 14 =
  6. 6.One bottle of oil holds 7.6 L. How many L do 6 of them make in all? =
  7. 7.5 ÷ 5 =
  8. 8.37.24 ÷ 4 =
  9. 9.3/5 × 12 =
  10. 10.0.2 × 0.8 =
  11. 11.1/4 ÷ 4/5 =
  12. 12.7/9 ÷ 6/7 =
  13. 13.7/8 × 14 =
  14. 14.1/5 ÷ 1/7 =
  15. 15.4/5 × 3/5 =
  16. 16.One packet of rice weighs 8.9 kg. How many kg do 8 of them make in all? =
  17. 17.2/7 × 2 =
  18. 18.17.86 ÷ 2 =
  19. 19.23.84 ÷ 8 =
  20. 20.1.28 ÷ 4 =
  21. 21.2/9 × 3/4 =
  22. 22.2/3 × 4/7 =
  23. 23.5.2 × 0.3 =
  24. 24.0.6 ÷ 0.3 =
  25. 25.8.4 × 0.9 =
  26. 26.One roll of ribbon has 2.1 m. How many m do 5 of them make in all? =
  27. 27.One roll of ribbon has 2.6 m. How many m do 7 of them make in all? =
  28. 28.2.1 × 0.4 =
  29. 29.One bag of potatoes weighs 7.3 kg. How many kg do 3 of them make in all? =
  30. 30.5/6 × 5/9 =
  31. 31.4/5 × 1/2 =
  32. 32.4/7 × 5/9 =
  33. 33.2/5 ÷ 3/5 =
  34. 34.One bottle of oil holds 3.4 L. How many L do 7 of them make in all? =
  35. 35.1.7 ÷ 5 =
  36. 36.1/6 × 1/5 =
  37. 37.1/2 ÷ 1/4 =
  38. 38.8.88 ÷ 8 =
  39. 39.7.7 ÷ 0.7 =
  40. 40.40.88 ÷ 8 =

Answer key

  1. 10/21
  2. 0.54
  3. 32/5
  4. 1/10
  5. 10
  6. 45.6
  7. 1
  8. 9.31
  9. 36/5
  10. 0.16
  11. 5/16
  12. 49/54
  13. 49/4
  14. 7/5
  15. 12/25
  16. 71.2
  17. 4/7
  18. 8.93
  19. 2.98
  20. 0.32
  21. 1/6
  22. 8/21
  23. 1.56
  24. 2
  25. 7.56
  26. 10.5
  27. 18.2
  28. 0.84
  29. 21.9
  30. 25/54
  31. 2/5
  32. 20/63
  33. 2/3
  34. 23.8
  35. 0.34
  36. 1/30
  37. 2
  38. 1.11
  39. 11
  40. 5.11

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