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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 255 · 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 6 and 12?
  2. 2.Is 8/10 in its simplest form? (a) No (b) Yes
  3. 3.Is 3/9 in its simplest form? (a) No (b) Yes
  4. 4.Write 7/14 in its simplest form. =
  5. 5.Write 4/10 in its simplest form. =
  6. 6.Is 3/10 in its simplest form? (a) No (b) Yes
  7. 7.Write 12/15 in its simplest form. =
  8. 8.What is the HCF of 15 and 20?
  9. 9.Write 35/45 in its simplest form. =
  10. 10.What is the HCF of 7 and 14?
  11. 11.Write 10/15 in its simplest form. =
  12. 12.Is 18/42 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 9 and 15?
  14. 14.Write 3/18 in its simplest form. =
  15. 15.Is 2/7 in its simplest form? (a) Yes (b) No
  16. 16.Is 5/9 in its simplest form? (a) Yes (b) No
  17. 17.Write 6/10 in its simplest form. =
  18. 18.What is the HCF of 8 and 48?
  19. 19.Write 24/42 in its simplest form. =
  20. 20.Write 6/42 in its simplest form. =
  21. 21.What is the HCF of 42 and 49?
  22. 22.Write 40/48 in its simplest form. =
  23. 23.Write 81/90 in its simplest form. =
  24. 24.Is 6/10 in its simplest form? (a) Yes (b) No
  25. 25.Is 12/54 in its simplest form? (a) Yes (b) No
  26. 26.Write 56/72 in its simplest form. =
  27. 27.What is the HCF of 5 and 35?
  28. 28.Is 1/9 in its simplest form? (a) No (b) Yes
  29. 29.Is 6/24 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 8 and 12?
  31. 31.Write 12/14 in its simplest form. =
  32. 32.Is 16/20 in its simplest form? (a) No (b) Yes
  33. 33.Write 14/18 in its simplest form. =
  34. 34.What is the HCF of 10 and 12?
  35. 35.Is 3/30 in its simplest form? (a) No (b) Yes
  36. 36.Write 10/18 in its simplest form. =
  37. 37.What is the HCF of 18 and 30?
  38. 38.Is 10/16 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 6 and 27?
  40. 40.Write 16/28 in its simplest form. =

Answer key

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

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