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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 587 · 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.What is the HCF of 18 and 20?
  2. 2.What is the HCF of 3 and 9?
  3. 3.What is the HCF of 20 and 36?
  4. 4.Is 14/16 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 12 and 32?
  6. 6.What is the HCF of 20 and 45?
  7. 7.Is 20/28 in its simplest form? (a) No (b) Yes
  8. 8.Is 1/3 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 5 and 25?
  10. 10.Write 32/36 in its simplest form. =
  11. 11.Is 30/48 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 9 and 63?
  13. 13.Write 8/32 in its simplest form. =
  14. 14.Is 5/6 in its simplest form? (a) Yes (b) No
  15. 15.Write 12/15 in its simplest form. =
  16. 16.Is 12/15 in its simplest form? (a) No (b) Yes
  17. 17.Is 12/14 in its simplest form? (a) Yes (b) No
  18. 18.Is 4/7 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 16 and 24?
  20. 20.What is the HCF of 6 and 48?
  21. 21.Write 4/6 in its simplest form. =
  22. 22.What is the HCF of 16 and 18?
  23. 23.What is the HCF of 6 and 18?
  24. 24.Write 9/15 in its simplest form. =
  25. 25.What is the HCF of 40 and 56?
  26. 26.Write 4/24 in its simplest form. =
  27. 27.What is the HCF of 35 and 40?
  28. 28.What is the HCF of 27 and 45?
  29. 29.What is the HCF of 45 and 81?
  30. 30.Is 14/18 in its simplest form? (a) Yes (b) No
  31. 31.Write 15/18 in its simplest form. =
  32. 32.Is 42/54 in its simplest form? (a) No (b) Yes
  33. 33.Is 6/7 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 8 and 56?
  35. 35.Is 3/10 in its simplest form? (a) No (b) Yes
  36. 36.Is 12/21 in its simplest form? (a) Yes (b) No
  37. 37.Is 4/5 in its simplest form? (a) No (b) Yes
  38. 38.Write 10/25 in its simplest form. =
  39. 39.Is 5/30 in its simplest form? (a) No (b) Yes
  40. 40.Is 2/18 in its simplest form? (a) Yes (b) No

Answer key

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

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