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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 832 · 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.What is the HCF of 3 and 9?
  2. 2.What is the HCF of 25 and 30?
  3. 3.What is the HCF of 27 and 63?
  4. 4.Is 2/9 in its simplest form? (a) Yes (b) No
  5. 5.Write 5/35 in its simplest form. =
  6. 6.Is 42/60 in its simplest form? (a) No (b) Yes
  7. 7.Write 18/27 in its simplest form. =
  8. 8.What is the HCF of 3 and 12?
  9. 9.Write 6/36 in its simplest form. =
  10. 10.Write 8/16 in its simplest form. =
  11. 11.Is 4/9 in its simplest form? (a) No (b) Yes
  12. 12.Is 1/7 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 8 and 24?
  14. 14.Write 63/72 in its simplest form. =
  15. 15.Is 3/12 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 25 and 45?
  17. 17.Is 1/10 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 6 and 8?
  19. 19.Is 5/9 in its simplest form? (a) No (b) Yes
  20. 20.Write 3/15 in its simplest form. =
  21. 21.What is the HCF of 16 and 56?
  22. 22.What is the HCF of 4 and 32?
  23. 23.Write 5/40 in its simplest form. =
  24. 24.Write 64/72 in its simplest form. =
  25. 25.What is the HCF of 12 and 40?
  26. 26.Is 4/40 in its simplest form? (a) Yes (b) No
  27. 27.Is 28/36 in its simplest form? (a) Yes (b) No
  28. 28.Write 16/40 in its simplest form. =
  29. 29.Is 7/9 in its simplest form? (a) No (b) Yes
  30. 30.Write 21/35 in its simplest form. =
  31. 31.What is the HCF of 27 and 45?
  32. 32.Is 30/42 in its simplest form? (a) No (b) Yes
  33. 33.Write 20/36 in its simplest form. =
  34. 34.What is the HCF of 5 and 30?
  35. 35.What is the HCF of 28 and 63?
  36. 36.What is the HCF of 12 and 14?
  37. 37.What is the HCF of 7 and 70?
  38. 38.Write 8/28 in its simplest form. =
  39. 39.Is 1/8 in its simplest form? (a) Yes (b) No
  40. 40.Write 81/90 in its simplest form. =

Answer key

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

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