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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 6 · 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 15/27 in its simplest form. =
  2. 2.Is 5/8 in its simplest form? (a) Yes (b) No
  3. 3.Is 9/24 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 25 and 30?
  5. 5.Write 3/21 in its simplest form. =
  6. 6.What is the HCF of 32 and 72?
  7. 7.Write 16/72 in its simplest form. =
  8. 8.Is 5/9 in its simplest form? (a) Yes (b) No
  9. 9.Is 1/2 in its simplest form? (a) No (b) Yes
  10. 10.Write 72/80 in its simplest form. =
  11. 11.Write 12/32 in its simplest form. =
  12. 12.Is 7/8 in its simplest form? (a) No (b) Yes
  13. 13.Is 30/48 in its simplest form? (a) No (b) Yes
  14. 14.Write 7/56 in its simplest form. =
  15. 15.Write 16/28 in its simplest form. =
  16. 16.Is 54/60 in its simplest form? (a) Yes (b) No
  17. 17.Write 49/56 in its simplest form. =
  18. 18.Write 18/20 in its simplest form. =
  19. 19.Write 8/12 in its simplest form. =
  20. 20.What is the HCF of 9 and 63?
  21. 21.Is 8/20 in its simplest form? (a) Yes (b) No
  22. 22.Write 4/36 in its simplest form. =
  23. 23.Is 4/7 in its simplest form? (a) No (b) Yes
  24. 24.Is 8/12 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 9 and 12?
  26. 26.Write 8/48 in its simplest form. =
  27. 27.Write 12/28 in its simplest form. =
  28. 28.What is the HCF of 27 and 45?
  29. 29.Write 9/54 in its simplest form. =
  30. 30.Write 36/40 in its simplest form. =
  31. 31.What is the HCF of 7 and 14?
  32. 32.What is the HCF of 12 and 21?
  33. 33.Write 18/45 in its simplest form. =
  34. 34.Is 5/50 in its simplest form? (a) No (b) Yes
  35. 35.Is 18/30 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 21 and 49?
  37. 37.What is the HCF of 6 and 18?
  38. 38.Is 9/15 in its simplest form? (a) Yes (b) No
  39. 39.Is 24/30 in its simplest form? (a) No (b) Yes
  40. 40.Write 9/18 in its simplest form. =

Answer key

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

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