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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 647 · 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 4/5 in its simplest form? (a) Yes (b) No
  2. 2.Is 15/20 in its simplest form? (a) No (b) Yes
  3. 3.Write 18/48 in its simplest form. =
  4. 4.What is the HCF of 9 and 90?
  5. 5.Write 7/42 in its simplest form. =
  6. 6.What is the HCF of 14 and 20?
  7. 7.Is 3/5 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 21 and 28?
  9. 9.Write 28/36 in its simplest form. =
  10. 10.Is 3/21 in its simplest form? (a) No (b) Yes
  11. 11.Write 6/27 in its simplest form. =
  12. 12.Is 3/10 in its simplest form? (a) No (b) Yes
  13. 13.Is 3/8 in its simplest form? (a) Yes (b) No
  14. 14.Write 9/24 in its simplest form. =
  15. 15.Write 49/56 in its simplest form. =
  16. 16.Is 10/18 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 8 and 64?
  18. 18.Write 4/24 in its simplest form. =
  19. 19.What is the HCF of 10 and 12?
  20. 20.Is 3/9 in its simplest form? (a) No (b) Yes
  21. 21.Write 6/24 in its simplest form. =
  22. 22.What is the HCF of 9 and 21?
  23. 23.Write 63/90 in its simplest form. =
  24. 24.Write 3/15 in its simplest form. =
  25. 25.Write 42/54 in its simplest form. =
  26. 26.What is the HCF of 9 and 63?
  27. 27.What is the HCF of 15 and 40?
  28. 28.What is the HCF of 6 and 27?
  29. 29.Write 9/54 in its simplest form. =
  30. 30.Write 10/16 in its simplest form. =
  31. 31.Is 15/40 in its simplest form? (a) Yes (b) No
  32. 32.Is 5/25 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 8 and 72?
  34. 34.Is 2/6 in its simplest form? (a) Yes (b) No
  35. 35.Is 12/21 in its simplest form? (a) Yes (b) No
  36. 36.Write 35/56 in its simplest form. =
  37. 37.Write 21/27 in its simplest form. =
  38. 38.Write 16/28 in its simplest form. =
  39. 39.Write 72/80 in its simplest form. =
  40. 40.Is 10/14 in its simplest form? (a) Yes (b) No

Answer key

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

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