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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 218 · 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.Write 5/15 in its simplest form. =
  2. 2.Is 5/9 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 12 and 20?
  4. 4.Write 49/63 in its simplest form. =
  5. 5.What is the HCF of 18 and 60?
  6. 6.Is 15/40 in its simplest form? (a) No (b) Yes
  7. 7.Is 3/7 in its simplest form? (a) Yes (b) No
  8. 8.Is 5/7 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 7 and 21?
  10. 10.What is the HCF of 5 and 15?
  11. 11.What is the HCF of 25 and 35?
  12. 12.What is the HCF of 4 and 8?
  13. 13.Write 30/36 in its simplest form. =
  14. 14.What is the HCF of 18 and 27?
  15. 15.Write 5/10 in its simplest form. =
  16. 16.Is 4/5 in its simplest form? (a) Yes (b) No
  17. 17.Is 9/15 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 4 and 20?
  19. 19.Is 1/6 in its simplest form? (a) No (b) Yes
  20. 20.Write 4/36 in its simplest form. =
  21. 21.Is 28/32 in its simplest form? (a) Yes (b) No
  22. 22.Write 7/14 in its simplest form. =
  23. 23.What is the HCF of 14 and 18?
  24. 24.Write 8/64 in its simplest form. =
  25. 25.Is 12/27 in its simplest form? (a) Yes (b) No
  26. 26.Is 3/5 in its simplest form? (a) No (b) Yes
  27. 27.Write 27/30 in its simplest form. =
  28. 28.What is the HCF of 24 and 80?
  29. 29.What is the HCF of 27 and 90?
  30. 30.Write 4/8 in its simplest form. =
  31. 31.Is 28/36 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 63 and 72?
  33. 33.Write 3/30 in its simplest form. =
  34. 34.Is 6/14 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 12 and 14?
  36. 36.Write 12/27 in its simplest form. =
  37. 37.Write 15/25 in its simplest form. =
  38. 38.What is the HCF of 45 and 72?
  39. 39.Write 10/35 in its simplest form. =
  40. 40.Is 6/20 in its simplest form? (a) Yes (b) No

Answer key

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

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