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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 905 · 40 questions
TalentJR

The method (Divide by the HCF): Find the HCF (highest common factor) of the top and the bottom. Divide the top and the bottom by the HCF. If the HCF is 1, the fraction is already in its simplest form.

NameDateTime takenScore ___ / 40
  1. 1.Is 24/54 in its simplest form? (a) No (b) Yes
  2. 2.Write 12/14 in its simplest form. =
  3. 3.Write 16/18 in its simplest form. =
  4. 4.Is 3/15 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 27 and 72?
  6. 6.What is the HCF of 36 and 42?
  7. 7.Write 8/48 in its simplest form. =
  8. 8.Is 7/10 in its simplest form? (a) Yes (b) No
  9. 9.Write 6/36 in its simplest form. =
  10. 10.What is the HCF of 25 and 40?
  11. 11.Write 18/24 in its simplest form. =
  12. 12.Is 3/10 in its simplest form? (a) No (b) Yes
  13. 13.Is 5/8 in its simplest form? (a) No (b) Yes
  14. 14.Write 45/63 in its simplest form. =
  15. 15.Write 18/45 in its simplest form. =
  16. 16.Write 6/30 in its simplest form. =
  17. 17.Write 48/54 in its simplest form. =
  18. 18.Is 1/9 in its simplest form? (a) Yes (b) No
  19. 19.Is 6/36 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 18 and 42?
  21. 21.Write 12/15 in its simplest form. =
  22. 22.Write 8/20 in its simplest form. =
  23. 23.Is 15/20 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 8 and 12?
  25. 25.What is the HCF of 28 and 40?
  26. 26.Is 4/5 in its simplest form? (a) No (b) Yes
  27. 27.Write 12/27 in its simplest form. =
  28. 28.Is 8/18 in its simplest form? (a) Yes (b) No
  29. 29.Write 3/21 in its simplest form. =
  30. 30.Is 2/3 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 3 and 9?
  32. 32.Is 1/4 in its simplest form? (a) Yes (b) No
  33. 33.Write 5/25 in its simplest form. =
  34. 34.What is the HCF of 8 and 24?
  35. 35.What is the HCF of 9 and 72?
  36. 36.What is the HCF of 20 and 45?
  37. 37.Is 2/16 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 10 and 15?
  39. 39.What is the HCF of 6 and 54?
  40. 40.Write 8/16 in its simplest form. =

Answer key

  1. No
  2. 6/7
  3. 8/9
  4. No
  5. 9
  6. 6
  7. 1/6
  8. Yes
  9. 1/6
  10. 5
  11. 3/4
  12. Yes
  13. Yes
  14. 5/7
  15. 2/5
  16. 1/5
  17. 8/9
  18. Yes
  19. No
  20. 6
  21. 4/5
  22. 2/5
  23. No
  24. 4
  25. 4
  26. Yes
  27. 4/9
  28. No
  29. 1/7
  30. Yes
  31. 3
  32. Yes
  33. 1/5
  34. 8
  35. 9
  36. 5
  37. No
  38. 5
  39. 6
  40. 1/2

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