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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 338 · 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.Write 20/45 in its simplest form. =
  3. 3.Is 6/21 in its simplest form? (a) No (b) Yes
  4. 4.Is 24/30 in its simplest form? (a) Yes (b) No
  5. 5.Is 12/30 in its simplest form? (a) Yes (b) No
  6. 6.Is 2/5 in its simplest form? (a) Yes (b) No
  7. 7.Is 16/36 in its simplest form? (a) Yes (b) No
  8. 8.Write 30/36 in its simplest form. =
  9. 9.Write 9/30 in its simplest form. =
  10. 10.Write 30/42 in its simplest form. =
  11. 11.Write 45/54 in its simplest form. =
  12. 12.Is 3/10 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 9 and 54?
  14. 14.What is the HCF of 12 and 54?
  15. 15.Write 20/24 in its simplest form. =
  16. 16.What is the HCF of 21 and 56?
  17. 17.Is 4/7 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 2 and 20?
  19. 19.Write 16/40 in its simplest form. =
  20. 20.What is the HCF of 63 and 72?
  21. 21.What is the HCF of 12 and 15?
  22. 22.Write 9/21 in its simplest form. =
  23. 23.What is the HCF of 6 and 30?
  24. 24.Is 2/18 in its simplest form? (a) No (b) Yes
  25. 25.Write 10/16 in its simplest form. =
  26. 26.Write 45/50 in its simplest form. =
  27. 27.Is 7/8 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 81 and 90?
  29. 29.Is 7/10 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 45 and 81?
  31. 31.Write 3/9 in its simplest form. =
  32. 32.Is 2/3 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 9 and 72?
  34. 34.Write 63/70 in its simplest form. =
  35. 35.Write 18/27 in its simplest form. =
  36. 36.What is the HCF of 18 and 45?
  37. 37.What is the HCF of 8 and 10?
  38. 38.Write 8/64 in its simplest form. =
  39. 39.Write 35/50 in its simplest form. =
  40. 40.What is the HCF of 15 and 27?

Answer key

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

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