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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 166 · 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 15/18 in its simplest form? (a) Yes (b) No
  2. 2.Is 6/9 in its simplest form? (a) Yes (b) No
  3. 3.Write 64/72 in its simplest form. =
  4. 4.Is 1/9 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 15 and 21?
  6. 6.What is the HCF of 21 and 24?
  7. 7.Write 28/63 in its simplest form. =
  8. 8.Write 63/90 in its simplest form. =
  9. 9.Write 4/8 in its simplest form. =
  10. 10.Is 14/18 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 14 and 35?
  12. 12.Write 8/72 in its simplest form. =
  13. 13.What is the HCF of 54 and 63?
  14. 14.Write 18/21 in its simplest form. =
  15. 15.What is the HCF of 9 and 63?
  16. 16.What is the HCF of 8 and 24?
  17. 17.Is 12/14 in its simplest form? (a) No (b) Yes
  18. 18.Write 15/24 in its simplest form. =
  19. 19.What is the HCF of 2 and 18?
  20. 20.Is 54/60 in its simplest form? (a) No (b) Yes
  21. 21.Write 12/40 in its simplest form. =
  22. 22.Write 6/8 in its simplest form. =
  23. 23.Write 2/8 in its simplest form. =
  24. 24.Is 5/20 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 15 and 35?
  26. 26.Write 8/40 in its simplest form. =
  27. 27.What is the HCF of 18 and 48?
  28. 28.Write 27/30 in its simplest form. =
  29. 29.Write 4/24 in its simplest form. =
  30. 30.Is 24/30 in its simplest form? (a) Yes (b) No
  31. 31.Write 10/18 in its simplest form. =
  32. 32.Is 10/25 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 6 and 18?
  34. 34.Is 4/12 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 18 and 20?
  36. 36.Write 6/36 in its simplest form. =
  37. 37.Is 10/16 in its simplest form? (a) Yes (b) No
  38. 38.Is 5/8 in its simplest form? (a) No (b) Yes
  39. 39.Write 4/18 in its simplest form. =
  40. 40.Write 14/21 in its simplest form. =

Answer key

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

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