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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 487 · 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 3/18 in its simplest form. =
  2. 2.Is 9/15 in its simplest form? (a) No (b) Yes
  3. 3.Is 8/28 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 24 and 64?
  5. 5.Write 6/21 in its simplest form. =
  6. 6.What is the HCF of 49 and 63?
  7. 7.Write 24/40 in its simplest form. =
  8. 8.What is the HCF of 2 and 4?
  9. 9.What is the HCF of 49 and 56?
  10. 10.Is 8/36 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 6 and 9?
  12. 12.What is the HCF of 3 and 21?
  13. 13.Write 25/30 in its simplest form. =
  14. 14.What is the HCF of 16 and 28?
  15. 15.Is 4/12 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 21 and 27?
  17. 17.What is the HCF of 35 and 49?
  18. 18.Write 35/45 in its simplest form. =
  19. 19.Is 7/10 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 16 and 20?
  21. 21.Is 2/5 in its simplest form? (a) No (b) Yes
  22. 22.Write 24/28 in its simplest form. =
  23. 23.What is the HCF of 5 and 15?
  24. 24.What is the HCF of 4 and 40?
  25. 25.Is 7/8 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 18 and 21?
  27. 27.What is the HCF of 18 and 81?
  28. 28.Write 18/45 in its simplest form. =
  29. 29.What is the HCF of 20 and 25?
  30. 30.Is 18/20 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 12 and 16?
  32. 32.Is 6/16 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 56 and 64?
  34. 34.Write 40/45 in its simplest form. =
  35. 35.Write 27/63 in its simplest form. =
  36. 36.Is 3/5 in its simplest form? (a) Yes (b) No
  37. 37.Write 10/12 in its simplest form. =
  38. 38.Write 4/16 in its simplest form. =
  39. 39.Is 1/10 in its simplest form? (a) Yes (b) No
  40. 40.Write 9/54 in its simplest form. =

Answer key

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

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