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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 128 · 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 2 and 8?
  2. 2.Is 1/5 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 40 and 64?
  4. 4.What is the HCF of 21 and 56?
  5. 5.Write 3/9 in its simplest form. =
  6. 6.Write 15/24 in its simplest form. =
  7. 7.What is the HCF of 3 and 18?
  8. 8.What is the HCF of 10 and 15?
  9. 9.What is the HCF of 9 and 30?
  10. 10.Write 20/24 in its simplest form. =
  11. 11.Write 14/63 in its simplest form. =
  12. 12.Write 8/32 in its simplest form. =
  13. 13.What is the HCF of 27 and 45?
  14. 14.Is 2/9 in its simplest form? (a) Yes (b) No
  15. 15.Write 12/32 in its simplest form. =
  16. 16.What is the HCF of 7 and 56?
  17. 17.Write 16/40 in its simplest form. =
  18. 18.Is 3/9 in its simplest form? (a) Yes (b) No
  19. 19.Write 21/27 in its simplest form. =
  20. 20.Is 12/42 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 56 and 63?
  22. 22.Write 64/72 in its simplest form. =
  23. 23.Is 2/18 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/16 in its simplest form? (a) Yes (b) No
  25. 25.Write 4/14 in its simplest form. =
  26. 26.Write 18/60 in its simplest form. =
  27. 27.Write 8/40 in its simplest form. =
  28. 28.Write 12/16 in its simplest form. =
  29. 29.Write 32/36 in its simplest form. =
  30. 30.Is 1/6 in its simplest form? (a) No (b) Yes
  31. 31.Write 5/25 in its simplest form. =
  32. 32.What is the HCF of 7 and 14?
  33. 33.Write 15/25 in its simplest form. =
  34. 34.Write 15/27 in its simplest form. =
  35. 35.Is 12/28 in its simplest form? (a) No (b) Yes
  36. 36.Write 12/20 in its simplest form. =
  37. 37.What is the HCF of 4 and 16?
  38. 38.Is 6/54 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 12 and 30?
  40. 40.Write 4/8 in its simplest form. =

Answer key

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

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