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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 939 · 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 1/3 in its simplest form? (a) No (b) Yes
  2. 2.Write 18/27 in its simplest form. =
  3. 3.What is the HCF of 7 and 28?
  4. 4.What is the HCF of 18 and 21?
  5. 5.Is 28/40 in its simplest form? (a) No (b) Yes
  6. 6.Write 7/63 in its simplest form. =
  7. 7.Is 15/25 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 10 and 18?
  9. 9.Is 4/16 in its simplest form? (a) No (b) Yes
  10. 10.Is 3/4 in its simplest form? (a) Yes (b) No
  11. 11.Write 12/27 in its simplest form. =
  12. 12.Write 24/42 in its simplest form. =
  13. 13.What is the HCF of 20 and 35?
  14. 14.What is the HCF of 8 and 48?
  15. 15.Write 8/64 in its simplest form. =
  16. 16.Is 5/7 in its simplest form? (a) No (b) Yes
  17. 17.Is 1/4 in its simplest form? (a) Yes (b) No
  18. 18.Is 10/16 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 12 and 15?
  20. 20.What is the HCF of 9 and 90?
  21. 21.Write 8/10 in its simplest form. =
  22. 22.Is 8/10 in its simplest form? (a) No (b) Yes
  23. 23.Is 27/30 in its simplest form? (a) No (b) Yes
  24. 24.Write 20/36 in its simplest form. =
  25. 25.Is 10/18 in its simplest form? (a) No (b) Yes
  26. 26.Write 35/45 in its simplest form. =
  27. 27.Is 1/10 in its simplest form? (a) Yes (b) No
  28. 28.Write 28/35 in its simplest form. =
  29. 29.Is 2/3 in its simplest form? (a) No (b) Yes
  30. 30.Is 5/8 in its simplest form? (a) No (b) Yes
  31. 31.Is 9/12 in its simplest form? (a) No (b) Yes
  32. 32.Write 12/30 in its simplest form. =
  33. 33.Is 5/6 in its simplest form? (a) No (b) Yes
  34. 34.Is 1/8 in its simplest form? (a) Yes (b) No
  35. 35.Write 8/16 in its simplest form. =
  36. 36.What is the HCF of 9 and 45?
  37. 37.Write 18/21 in its simplest form. =
  38. 38.Write 28/49 in its simplest form. =
  39. 39.What is the HCF of 16 and 24?
  40. 40.What is the HCF of 8 and 18?

Answer key

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

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