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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 569 · 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 3/7 in its simplest form? (a) Yes (b) No
  2. 2.Is 3/5 in its simplest form? (a) Yes (b) No
  3. 3.Write 81/90 in its simplest form. =
  4. 4.What is the HCF of 12 and 54?
  5. 5.Write 63/70 in its simplest form. =
  6. 6.Is 6/7 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 25 and 40?
  8. 8.Write 4/12 in its simplest form. =
  9. 9.Write 21/27 in its simplest form. =
  10. 10.Write 7/14 in its simplest form. =
  11. 11.Write 6/54 in its simplest form. =
  12. 12.Is 3/8 in its simplest form? (a) No (b) Yes
  13. 13.Write 4/36 in its simplest form. =
  14. 14.What is the HCF of 40 and 45?
  15. 15.Write 18/20 in its simplest form. =
  16. 16.Write 40/56 in its simplest form. =
  17. 17.Is 14/20 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 8 and 14?
  19. 19.Is 6/8 in its simplest form? (a) Yes (b) No
  20. 20.Is 20/28 in its simplest form? (a) Yes (b) No
  21. 21.Is 15/21 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 32 and 40?
  23. 23.What is the HCF of 9 and 54?
  24. 24.Write 5/40 in its simplest form. =
  25. 25.Is 1/4 in its simplest form? (a) Yes (b) No
  26. 26.Write 54/60 in its simplest form. =
  27. 27.Is 30/54 in its simplest form? (a) No (b) Yes
  28. 28.Write 4/28 in its simplest form. =
  29. 29.Write 30/54 in its simplest form. =
  30. 30.Is 8/14 in its simplest form? (a) Yes (b) No
  31. 31.Is 18/60 in its simplest form? (a) Yes (b) No
  32. 32.Is 5/40 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 6 and 54?
  34. 34.What is the HCF of 7 and 42?
  35. 35.What is the HCF of 8 and 18?
  36. 36.Is 5/8 in its simplest form? (a) Yes (b) No
  37. 37.Is 15/25 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 12 and 32?
  39. 39.Write 16/20 in its simplest form. =
  40. 40.Is 12/15 in its simplest form? (a) Yes (b) No

Answer key

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

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