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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 48 · 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 21/30 in its simplest form. =
  2. 2.Is 12/54 in its simplest form? (a) Yes (b) No
  3. 3.Write 3/6 in its simplest form. =
  4. 4.What is the HCF of 45 and 54?
  5. 5.Write 14/16 in its simplest form. =
  6. 6.What is the HCF of 3 and 18?
  7. 7.Is 12/27 in its simplest form? (a) Yes (b) No
  8. 8.Is 24/42 in its simplest form? (a) Yes (b) No
  9. 9.Is 7/8 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 7 and 63?
  11. 11.What is the HCF of 2 and 16?
  12. 12.Write 35/49 in its simplest form. =
  13. 13.Is 28/40 in its simplest form? (a) No (b) Yes
  14. 14.Is 7/10 in its simplest form? (a) Yes (b) No
  15. 15.Is 9/24 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 18 and 30?
  17. 17.Write 9/30 in its simplest form. =
  18. 18.Is 1/5 in its simplest form? (a) Yes (b) No
  19. 19.Is 2/20 in its simplest form? (a) Yes (b) No
  20. 20.Write 4/16 in its simplest form. =
  21. 21.Is 6/8 in its simplest form? (a) No (b) Yes
  22. 22.Is 2/7 in its simplest form? (a) No (b) Yes
  23. 23.Is 6/9 in its simplest form? (a) No (b) Yes
  24. 24.Is 1/4 in its simplest form? (a) Yes (b) No
  25. 25.Is 1/10 in its simplest form? (a) Yes (b) No
  26. 26.Is 1/9 in its simplest form? (a) No (b) Yes
  27. 27.Is 4/5 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 7 and 28?
  29. 29.What is the HCF of 24 and 80?
  30. 30.Write 6/36 in its simplest form. =
  31. 31.What is the HCF of 2 and 4?
  32. 32.Write 18/45 in its simplest form. =
  33. 33.What is the HCF of 9 and 72?
  34. 34.Is 5/7 in its simplest form? (a) No (b) Yes
  35. 35.Write 5/30 in its simplest form. =
  36. 36.Write 12/15 in its simplest form. =
  37. 37.Write 18/81 in its simplest form. =
  38. 38.Write 9/27 in its simplest form. =
  39. 39.Is 1/7 in its simplest form? (a) Yes (b) No
  40. 40.Write 12/30 in its simplest form. =

Answer key

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

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