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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 158 · 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 4/5 in its simplest form? (a) No (b) Yes
  2. 2.Write 27/90 in its simplest form. =
  3. 3.Is 10/16 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 3 and 18?
  5. 5.What is the HCF of 28 and 36?
  6. 6.Write 30/48 in its simplest form. =
  7. 7.Write 12/28 in its simplest form. =
  8. 8.Write 16/56 in its simplest form. =
  9. 9.What is the HCF of 12 and 27?
  10. 10.Write 20/32 in its simplest form. =
  11. 11.Is 20/36 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 10 and 12?
  13. 13.Write 6/12 in its simplest form. =
  14. 14.Is 25/35 in its simplest form? (a) Yes (b) No
  15. 15.Write 6/48 in its simplest form. =
  16. 16.Write 9/15 in its simplest form. =
  17. 17.Is 2/14 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 4 and 36?
  19. 19.What is the HCF of 3 and 6?
  20. 20.Write 4/8 in its simplest form. =
  21. 21.Write 15/35 in its simplest form. =
  22. 22.Is 2/18 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 24 and 28?
  24. 24.Write 9/54 in its simplest form. =
  25. 25.Is 9/12 in its simplest form? (a) Yes (b) No
  26. 26.Is 2/16 in its simplest form? (a) No (b) Yes
  27. 27.Is 4/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 27/45 in its simplest form. =
  29. 29.Is 15/27 in its simplest form? (a) No (b) Yes
  30. 30.Write 45/72 in its simplest form. =
  31. 31.What is the HCF of 2 and 8?
  32. 32.What is the HCF of 72 and 80?
  33. 33.Is 15/21 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 27 and 36?
  35. 35.Write 2/4 in its simplest form. =
  36. 36.Write 9/21 in its simplest form. =
  37. 37.What is the HCF of 4 and 40?
  38. 38.Write 15/21 in its simplest form. =
  39. 39.Write 49/56 in its simplest form. =
  40. 40.What is the HCF of 21 and 30?

Answer key

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

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