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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 87 · 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 4/5 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 15 and 18?
  3. 3.What is the HCF of 24 and 27?
  4. 4.Write 9/45 in its simplest form. =
  5. 5.Write 2/8 in its simplest form. =
  6. 6.Is 6/27 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 8 and 72?
  8. 8.Write 7/42 in its simplest form. =
  9. 9.Is 1/5 in its simplest form? (a) Yes (b) No
  10. 10.Is 1/8 in its simplest form? (a) No (b) Yes
  11. 11.Write 10/16 in its simplest form. =
  12. 12.Is 4/16 in its simplest form? (a) No (b) Yes
  13. 13.Is 30/42 in its simplest form? (a) Yes (b) No
  14. 14.Is 3/8 in its simplest form? (a) No (b) Yes
  15. 15.Is 28/40 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 18 and 60?
  17. 17.Write 15/50 in its simplest form. =
  18. 18.Write 12/21 in its simplest form. =
  19. 19.Is 3/5 in its simplest form? (a) Yes (b) No
  20. 20.Is 24/42 in its simplest form? (a) No (b) Yes
  21. 21.Is 42/48 in its simplest form? (a) Yes (b) No
  22. 22.Write 24/80 in its simplest form. =
  23. 23.Is 45/50 in its simplest form? (a) Yes (b) No
  24. 24.Write 21/49 in its simplest form. =
  25. 25.Write 16/18 in its simplest form. =
  26. 26.Is 2/3 in its simplest form? (a) No (b) Yes
  27. 27.Write 15/35 in its simplest form. =
  28. 28.Write 15/25 in its simplest form. =
  29. 29.What is the HCF of 15 and 25?
  30. 30.Write 4/6 in its simplest form. =
  31. 31.Write 12/15 in its simplest form. =
  32. 32.Write 12/40 in its simplest form. =
  33. 33.What is the HCF of 54 and 63?
  34. 34.Write 5/40 in its simplest form. =
  35. 35.What is the HCF of 5 and 10?
  36. 36.Is 5/8 in its simplest form? (a) No (b) Yes
  37. 37.Is 9/10 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 4 and 12?
  39. 39.Is 12/54 in its simplest form? (a) No (b) Yes
  40. 40.Is 27/30 in its simplest form? (a) No (b) Yes

Answer key

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

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