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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 217 · 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. 1.5/8 × 5/9 =
  2. 2.One roll of ribbon has 3.5 m. How many m do 10 of them make in all? =
  3. 3.1/2 × 1/5 =
  4. 4.7/8 × 1/7 =
  5. 5.3/4 × 12 =
  6. 6.1/3 ÷ 1/3 =
  7. 7.4/5 × 15 =
  8. 8.5/8 ÷ 2/9 =
  9. 9.7/9 × 2 =
  10. 10.8/9 ÷ 7/9 =
  11. 11.5.5 × 0.6 =
  12. 12.5.4 ÷ 0.6 =
  13. 13.3/5 × 4 =
  14. 14.3.64 ÷ 4 =
  15. 15.42.7 ÷ 5 =
  16. 16.6.4 × 0.4 =
  17. 17.7/8 ÷ 5/8 =
  18. 18.2/9 × 4 =
  19. 19.1/8 ÷ 1/3 =
  20. 20.3/7 ÷ 5/6 =
  21. 21.One roll of ribbon has 2 m. How many m do 10 of them make in all? =
  22. 22.2/3 ÷ 3/4 =
  23. 23.1.2 ÷ 0.4 =
  24. 24.5.36 ÷ 4 =
  25. 25.2/3 ÷ 2/7 =
  26. 26.4/7 ÷ 5/6 =
  27. 27.7.5 × 0.5 =
  28. 28.1/7 ÷ 3/8 =
  29. 29.7.6 ÷ 8 =
  30. 30.1/6 × 15 =
  31. 31.1/3 ÷ 1/5 =
  32. 32.3/5 ÷ 3/5 =
  33. 33.5.1 × 0.9 =
  34. 34.9.9 ÷ 0.9 =
  35. 35.One roll of ribbon has 3.5 m. How many m do 4 of them make in all? =
  36. 36.One packet of rice weighs 9.5 kg. How many kg do 2 of them make in all? =
  37. 37.4/9 × 1/3 =
  38. 38.One bottle of oil holds 8 L. How many L do 12 of them make in all? =
  39. 39.3/8 ÷ 1/3 =
  40. 40.One bottle of oil holds 1.3 L. How many L do 11 of them make in all? =

Answer key

  1. 25/72
  2. 35
  3. 1/10
  4. 1/8
  5. 9
  6. 1
  7. 12
  8. 45/16
  9. 14/9
  10. 8/7
  11. 3.3
  12. 9
  13. 12/5
  14. 0.91
  15. 8.54
  16. 2.56
  17. 7/5
  18. 8/9
  19. 3/8
  20. 18/35
  21. 20
  22. 8/9
  23. 3
  24. 1.34
  25. 7/3
  26. 24/35
  27. 3.75
  28. 8/21
  29. 0.95
  30. 5/2
  31. 5/3
  32. 1
  33. 4.59
  34. 11
  35. 14
  36. 19
  37. 4/27
  38. 96
  39. 9/8
  40. 14.3

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