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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 32 · 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.Write 12/18 in its simplest form. =
  2. 2.Is 8/9 in its simplest form? (a) Yes (b) No
  3. 3.Write 9/36 in its simplest form. =
  4. 4.What is the HCF of 7 and 70?
  5. 5.What is the HCF of 30 and 36?
  6. 6.Write 45/81 in its simplest form. =
  7. 7.Write 6/21 in its simplest form. =
  8. 8.Write 35/49 in its simplest form. =
  9. 9.Write 3/27 in its simplest form. =
  10. 10.Write 4/10 in its simplest form. =
  11. 11.What is the HCF of 10 and 14?
  12. 12.Write 24/56 in its simplest form. =
  13. 13.Write 21/27 in its simplest form. =
  14. 14.Is 3/18 in its simplest form? (a) No (b) Yes
  15. 15.Write 3/6 in its simplest form. =
  16. 16.Write 12/28 in its simplest form. =
  17. 17.Is 1/2 in its simplest form? (a) Yes (b) No
  18. 18.Write 18/42 in its simplest form. =
  19. 19.Write 10/15 in its simplest form. =
  20. 20.Write 12/15 in its simplest form. =
  21. 21.Is 6/42 in its simplest form? (a) Yes (b) No
  22. 22.Is 54/60 in its simplest form? (a) Yes (b) No
  23. 23.Write 8/12 in its simplest form. =
  24. 24.What is the HCF of 54 and 63?
  25. 25.Write 2/4 in its simplest form. =
  26. 26.What is the HCF of 3 and 27?
  27. 27.Is 9/15 in its simplest form? (a) Yes (b) No
  28. 28.Write 18/48 in its simplest form. =
  29. 29.Write 36/45 in its simplest form. =
  30. 30.Is 2/7 in its simplest form? (a) No (b) Yes
  31. 31.Is 7/9 in its simplest form? (a) Yes (b) No
  32. 32.Is 3/10 in its simplest form? (a) No (b) Yes
  33. 33.Is 21/24 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 12 and 15?
  35. 35.Is 3/4 in its simplest form? (a) No (b) Yes
  36. 36.Write 8/18 in its simplest form. =
  37. 37.What is the HCF of 2 and 16?
  38. 38.Is 2/10 in its simplest form? (a) No (b) Yes
  39. 39.Is 1/5 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 9 and 27?

Answer key

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

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