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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 18 · 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 15/20 in its simplest form? (a) No (b) Yes
  2. 2.Write 10/15 in its simplest form. =
  3. 3.Is 9/24 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 8 and 18?
  5. 5.Write 21/24 in its simplest form. =
  6. 6.Is 9/10 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 3 and 12?
  8. 8.Is 2/8 in its simplest form? (a) No (b) Yes
  9. 9.Is 6/15 in its simplest form? (a) Yes (b) No
  10. 10.Is 1/10 in its simplest form? (a) No (b) Yes
  11. 11.Write 2/6 in its simplest form. =
  12. 12.Write 21/49 in its simplest form. =
  13. 13.Is 1/9 in its simplest form? (a) No (b) Yes
  14. 14.Is 6/7 in its simplest form? (a) No (b) Yes
  15. 15.Write 18/21 in its simplest form. =
  16. 16.Write 20/28 in its simplest form. =
  17. 17.Is 1/2 in its simplest form? (a) Yes (b) No
  18. 18.Is 1/4 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 36 and 81?
  20. 20.Write 8/18 in its simplest form. =
  21. 21.Write 6/60 in its simplest form. =
  22. 22.Write 2/4 in its simplest form. =
  23. 23.What is the HCF of 16 and 18?
  24. 24.Write 5/20 in its simplest form. =
  25. 25.Write 8/80 in its simplest form. =
  26. 26.What is the HCF of 2 and 16?
  27. 27.Write 35/40 in its simplest form. =
  28. 28.Is 21/24 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 35 and 63?
  30. 30.Write 8/10 in its simplest form. =
  31. 31.Is 2/3 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 4 and 24?
  33. 33.Is 12/18 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 6 and 9?
  35. 35.Write 3/12 in its simplest form. =
  36. 36.What is the HCF of 21 and 56?
  37. 37.Write 6/54 in its simplest form. =
  38. 38.What is the HCF of 6 and 48?
  39. 39.Write 15/25 in its simplest form. =
  40. 40.Write 7/28 in its simplest form. =

Answer key

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

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