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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 219 · 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.Write 27/72 in its simplest form. =
  2. 2.Is 5/6 in its simplest form? (a) No (b) Yes
  3. 3.Write 5/15 in its simplest form. =
  4. 4.Write 15/35 in its simplest form. =
  5. 5.Is 5/10 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 6 and 20?
  7. 7.Is 12/54 in its simplest form? (a) No (b) Yes
  8. 8.Is 5/9 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 3 and 18?
  10. 10.What is the HCF of 81 and 90?
  11. 11.Is 12/27 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 18 and 20?
  13. 13.Is 5/35 in its simplest form? (a) Yes (b) No
  14. 14.Write 12/21 in its simplest form. =
  15. 15.Write 48/54 in its simplest form. =
  16. 16.What is the HCF of 2 and 10?
  17. 17.Is 3/5 in its simplest form? (a) No (b) Yes
  18. 18.Write 12/32 in its simplest form. =
  19. 19.What is the HCF of 12 and 27?
  20. 20.What is the HCF of 6 and 16?
  21. 21.Write 9/18 in its simplest form. =
  22. 22.Write 12/20 in its simplest form. =
  23. 23.What is the HCF of 10 and 45?
  24. 24.Write 20/25 in its simplest form. =
  25. 25.Is 7/9 in its simplest form? (a) Yes (b) No
  26. 26.Write 7/14 in its simplest form. =
  27. 27.Is 1/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 24/32 in its simplest form. =
  29. 29.Is 6/7 in its simplest form? (a) Yes (b) No
  30. 30.Is 15/20 in its simplest form? (a) No (b) Yes
  31. 31.Is 1/5 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 12 and 20?
  33. 33.Write 9/36 in its simplest form. =
  34. 34.Is 14/18 in its simplest form? (a) Yes (b) No
  35. 35.Is 25/45 in its simplest form? (a) No (b) Yes
  36. 36.Is 1/4 in its simplest form? (a) No (b) Yes
  37. 37.Write 9/27 in its simplest form. =
  38. 38.Write 8/32 in its simplest form. =
  39. 39.What is the HCF of 5 and 20?
  40. 40.What is the HCF of 21 and 24?

Answer key

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

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