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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 123 · 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 8 and 28?
  2. 2.Write 12/18 in its simplest form. =
  3. 3.What is the HCF of 16 and 18?
  4. 4.What is the HCF of 12 and 27?
  5. 5.What is the HCF of 8 and 40?
  6. 6.Write 9/54 in its simplest form. =
  7. 7.Write 18/42 in its simplest form. =
  8. 8.Write 6/21 in its simplest form. =
  9. 9.Is 3/15 in its simplest form? (a) No (b) Yes
  10. 10.Is 5/35 in its simplest form? (a) No (b) Yes
  11. 11.Write 45/54 in its simplest form. =
  12. 12.What is the HCF of 8 and 32?
  13. 13.Write 8/24 in its simplest form. =
  14. 14.What is the HCF of 10 and 12?
  15. 15.Write 2/10 in its simplest form. =
  16. 16.What is the HCF of 40 and 64?
  17. 17.What is the HCF of 15 and 21?
  18. 18.Is 4/24 in its simplest form? (a) Yes (b) No
  19. 19.Write 5/50 in its simplest form. =
  20. 20.Write 27/45 in its simplest form. =
  21. 21.Write 63/72 in its simplest form. =
  22. 22.Write 12/27 in its simplest form. =
  23. 23.What is the HCF of 9 and 54?
  24. 24.Is 20/24 in its simplest form? (a) No (b) Yes
  25. 25.Write 5/10 in its simplest form. =
  26. 26.What is the HCF of 4 and 40?
  27. 27.Write 8/20 in its simplest form. =
  28. 28.What is the HCF of 63 and 72?
  29. 29.Is 2/14 in its simplest form? (a) Yes (b) No
  30. 30.Write 6/9 in its simplest form. =
  31. 31.Is 10/15 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 3 and 12?
  33. 33.Write 9/72 in its simplest form. =
  34. 34.What is the HCF of 40 and 48?
  35. 35.What is the HCF of 72 and 81?
  36. 36.What is the HCF of 18 and 60?
  37. 37.Write 16/20 in its simplest form. =
  38. 38.What is the HCF of 9 and 90?
  39. 39.Is 8/18 in its simplest form? (a) No (b) Yes
  40. 40.Write 5/30 in its simplest form. =

Answer key

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

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