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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 174 · 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 3/12 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 10 and 18?
  3. 3.Is 1/4 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 4 and 32?
  5. 5.What is the HCF of 14 and 18?
  6. 6.What is the HCF of 63 and 70?
  7. 7.Is 2/3 in its simplest form? (a) No (b) Yes
  8. 8.Is 1/8 in its simplest form? (a) Yes (b) No
  9. 9.Is 25/30 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 45 and 63?
  11. 11.What is the HCF of 35 and 40?
  12. 12.What is the HCF of 3 and 18?
  13. 13.Write 21/30 in its simplest form. =
  14. 14.Write 9/15 in its simplest form. =
  15. 15.Write 8/16 in its simplest form. =
  16. 16.Write 28/35 in its simplest form. =
  17. 17.Is 10/45 in its simplest form? (a) Yes (b) No
  18. 18.Is 2/10 in its simplest form? (a) No (b) Yes
  19. 19.Write 36/45 in its simplest form. =
  20. 20.Is 1/7 in its simplest form? (a) No (b) Yes
  21. 21.Is 4/9 in its simplest form? (a) No (b) Yes
  22. 22.Is 1/5 in its simplest form? (a) No (b) Yes
  23. 23.Write 10/18 in its simplest form. =
  24. 24.Write 40/48 in its simplest form. =
  25. 25.Write 28/40 in its simplest form. =
  26. 26.What is the HCF of 8 and 28?
  27. 27.Write 4/28 in its simplest form. =
  28. 28.Write 12/15 in its simplest form. =
  29. 29.Is 3/5 in its simplest form? (a) No (b) Yes
  30. 30.Write 81/90 in its simplest form. =
  31. 31.Write 36/40 in its simplest form. =
  32. 32.What is the HCF of 20 and 35?
  33. 33.Is 5/6 in its simplest form? (a) No (b) Yes
  34. 34.Write 49/70 in its simplest form. =
  35. 35.What is the HCF of 7 and 56?
  36. 36.Is 4/24 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 27 and 30?
  38. 38.What is the HCF of 9 and 54?
  39. 39.Write 6/15 in its simplest form. =
  40. 40.Write 10/15 in its simplest form. =

Answer key

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

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