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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 129 · 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 40 and 72?
  2. 2.Is 2/9 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 9 and 12?
  4. 4.What is the HCF of 7 and 14?
  5. 5.Is 1/8 in its simplest form? (a) Yes (b) No
  6. 6.Write 2/14 in its simplest form. =
  7. 7.What is the HCF of 12 and 15?
  8. 8.Write 35/49 in its simplest form. =
  9. 9.Write 9/24 in its simplest form. =
  10. 10.What is the HCF of 5 and 30?
  11. 11.Write 6/14 in its simplest form. =
  12. 12.Is 3/5 in its simplest form? (a) Yes (b) No
  13. 13.Write 14/35 in its simplest form. =
  14. 14.What is the HCF of 4 and 28?
  15. 15.What is the HCF of 20 and 36?
  16. 16.Write 8/10 in its simplest form. =
  17. 17.Is 4/5 in its simplest form? (a) Yes (b) No
  18. 18.Write 4/16 in its simplest form. =
  19. 19.Is 3/10 in its simplest form? (a) No (b) Yes
  20. 20.Write 32/36 in its simplest form. =
  21. 21.What is the HCF of 35 and 63?
  22. 22.Is 5/9 in its simplest form? (a) No (b) Yes
  23. 23.Write 9/90 in its simplest form. =
  24. 24.Write 8/80 in its simplest form. =
  25. 25.Write 25/35 in its simplest form. =
  26. 26.Write 25/45 in its simplest form. =
  27. 27.Write 8/36 in its simplest form. =
  28. 28.Write 3/9 in its simplest form. =
  29. 29.What is the HCF of 4 and 18?
  30. 30.Write 10/12 in its simplest form. =
  31. 31.What is the HCF of 81 and 90?
  32. 32.Write 12/14 in its simplest form. =
  33. 33.Write 10/18 in its simplest form. =
  34. 34.Write 15/18 in its simplest form. =
  35. 35.What is the HCF of 30 and 48?
  36. 36.Write 64/72 in its simplest form. =
  37. 37.Write 9/27 in its simplest form. =
  38. 38.Write 2/10 in its simplest form. =
  39. 39.Is 1/9 in its simplest form? (a) Yes (b) No
  40. 40.Is 9/12 in its simplest form? (a) Yes (b) No

Answer key

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

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