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Simplest Form Fractions Worksheet

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

Answer key

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

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