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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 866 · 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 2/5 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 21 and 24?
  3. 3.Write 3/24 in its simplest form. =
  4. 4.Is 12/30 in its simplest form? (a) No (b) Yes
  5. 5.Write 81/90 in its simplest form. =
  6. 6.Write 14/20 in its simplest form. =
  7. 7.Write 9/15 in its simplest form. =
  8. 8.What is the HCF of 16 and 28?
  9. 9.Write 9/54 in its simplest form. =
  10. 10.Is 21/30 in its simplest form? (a) Yes (b) No
  11. 11.Write 36/42 in its simplest form. =
  12. 12.Write 9/45 in its simplest form. =
  13. 13.Write 32/36 in its simplest form. =
  14. 14.Write 8/80 in its simplest form. =
  15. 15.What is the HCF of 49 and 70?
  16. 16.Is 1/2 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 4 and 12?
  18. 18.Is 6/10 in its simplest form? (a) No (b) Yes
  19. 19.Write 7/70 in its simplest form. =
  20. 20.Write 32/40 in its simplest form. =
  21. 21.What is the HCF of 6 and 30?
  22. 22.Is 5/8 in its simplest form? (a) No (b) Yes
  23. 23.Is 10/18 in its simplest form? (a) No (b) Yes
  24. 24.Write 9/18 in its simplest form. =
  25. 25.Write 15/18 in its simplest form. =
  26. 26.Is 4/10 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 2 and 8?
  28. 28.Write 56/64 in its simplest form. =
  29. 29.Is 2/7 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 21 and 27?
  31. 31.What is the HCF of 9 and 15?
  32. 32.What is the HCF of 63 and 90?
  33. 33.Is 1/6 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 8 and 12?
  35. 35.Write 21/27 in its simplest form. =
  36. 36.What is the HCF of 20 and 24?
  37. 37.Write 2/14 in its simplest form. =
  38. 38.Write 2/16 in its simplest form. =
  39. 39.Is 1/5 in its simplest form? (a) Yes (b) No
  40. 40.Is 12/28 in its simplest form? (a) Yes (b) No

Answer key

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

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