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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 210 · 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 roll of ribbon has 8.9 m. How many m do 11 of them make in all? =
  2. 2.2.2 × 0.3 =
  3. 3.One jug of milk holds 8.9 L. How many L do 2 of them make in all? =
  4. 4.3/4 × 11 =
  5. 5.14.75 ÷ 5 =
  6. 6.7/9 ÷ 3/7 =
  7. 7.2.1 ÷ 0.3 =
  8. 8.2.8 × 0.4 =
  9. 9.3/5 ÷ 3/5 =
  10. 10.1/2 × 2/3 =
  11. 11.1.5 × 0.3 =
  12. 12.5.5 × 0.4 =
  13. 13.4/5 × 3/8 =
  14. 14.5/7 × 15 =
  15. 15.6/7 × 3 =
  16. 16.5.4 ÷ 0.6 =
  17. 17.1/3 × 3/8 =
  18. 18.One jug of milk holds 9 L. How many L do 12 of them make in all? =
  19. 19.3/8 × 5/8 =
  20. 20.8/9 × 3/7 =
  21. 21.7.6 × 0.3 =
  22. 22.0.8 ÷ 0.2 =
  23. 23.7/9 ÷ 2/5 =
  24. 24.3 ÷ 5 =
  25. 25.7.2 ÷ 0.6 =
  26. 26.17 ÷ 4 =
  27. 27.4/5 × 1/6 =
  28. 28.1/8 × 1/6 =
  29. 29.4/5 ÷ 1/8 =
  30. 30.14.92 ÷ 2 =
  31. 31.One jug of milk holds 7.7 L. How many L do 12 of them make in all? =
  32. 32.1/3 × 1/7 =
  33. 33.One roll of ribbon has 7.2 m. How many m do 9 of them make in all? =
  34. 34.3.3 × 0.6 =
  35. 35.One roll of ribbon has 3.7 m. How many m do 12 of them make in all? =
  36. 36.2.32 ÷ 4 =
  37. 37.1/4 ÷ 4/9 =
  38. 38.3.5 ÷ 0.7 =
  39. 39.7/8 ÷ 1/4 =
  40. 40.1/9 × 2/3 =

Answer key

  1. 97.9
  2. 0.66
  3. 17.8
  4. 33/4
  5. 2.95
  6. 49/27
  7. 7
  8. 1.12
  9. 1
  10. 1/3
  11. 0.45
  12. 2.2
  13. 3/10
  14. 75/7
  15. 18/7
  16. 9
  17. 1/8
  18. 108
  19. 15/64
  20. 8/21
  21. 2.28
  22. 4
  23. 35/18
  24. 0.6
  25. 12
  26. 4.25
  27. 2/15
  28. 1/48
  29. 32/5
  30. 7.46
  31. 92.4
  32. 1/21
  33. 64.8
  34. 1.98
  35. 44.4
  36. 0.58
  37. 9/16
  38. 5
  39. 7/2
  40. 2/27

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