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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 221 · 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 2/7 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 18 and 24?
  3. 3.Is 3/7 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 5 and 15?
  5. 5.What is the HCF of 9 and 15?
  6. 6.What is the HCF of 4 and 32?
  7. 7.Write 10/14 in its simplest form. =
  8. 8.Write 5/20 in its simplest form. =
  9. 9.Is 2/12 in its simplest form? (a) No (b) Yes
  10. 10.Is 6/12 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 14 and 20?
  12. 12.Write 9/45 in its simplest form. =
  13. 13.Is 25/30 in its simplest form? (a) Yes (b) No
  14. 14.Is 6/36 in its simplest form? (a) No (b) Yes
  15. 15.Is 6/42 in its simplest form? (a) No (b) Yes
  16. 16.Is 3/9 in its simplest form? (a) No (b) Yes
  17. 17.Write 8/20 in its simplest form. =
  18. 18.What is the HCF of 8 and 12?
  19. 19.What is the HCF of 3 and 9?
  20. 20.Is 1/2 in its simplest form? (a) Yes (b) No
  21. 21.Is 10/25 in its simplest form? (a) Yes (b) No
  22. 22.Is 6/21 in its simplest form? (a) Yes (b) No
  23. 23.Is 3/4 in its simplest form? (a) No (b) Yes
  24. 24.Write 8/18 in its simplest form. =
  25. 25.Write 16/40 in its simplest form. =
  26. 26.Is 1/3 in its simplest form? (a) No (b) Yes
  27. 27.Write 2/18 in its simplest form. =
  28. 28.Is 1/4 in its simplest form? (a) No (b) Yes
  29. 29.Write 35/63 in its simplest form. =
  30. 30.What is the HCF of 6 and 15?
  31. 31.Is 21/27 in its simplest form? (a) Yes (b) No
  32. 32.Write 56/80 in its simplest form. =
  33. 33.What is the HCF of 56 and 63?
  34. 34.Is 30/54 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 36 and 45?
  36. 36.Write 5/35 in its simplest form. =
  37. 37.What is the HCF of 2 and 20?
  38. 38.Write 4/10 in its simplest form. =
  39. 39.Write 63/81 in its simplest form. =
  40. 40.Write 3/27 in its simplest form. =

Answer key

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

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