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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 189 · 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.Write 16/36 in its simplest form. =
  2. 2.Write 24/80 in its simplest form. =
  3. 3.What is the HCF of 8 and 18?
  4. 4.Write 12/28 in its simplest form. =
  5. 5.Write 7/35 in its simplest form. =
  6. 6.Is 3/8 in its simplest form? (a) Yes (b) No
  7. 7.Write 3/24 in its simplest form. =
  8. 8.Is 1/10 in its simplest form? (a) No (b) Yes
  9. 9.Write 6/9 in its simplest form. =
  10. 10.Is 2/12 in its simplest form? (a) Yes (b) No
  11. 11.Write 6/20 in its simplest form. =
  12. 12.What is the HCF of 45 and 63?
  13. 13.What is the HCF of 56 and 80?
  14. 14.What is the HCF of 7 and 28?
  15. 15.Is 5/7 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 20 and 25?
  17. 17.Write 15/25 in its simplest form. =
  18. 18.Write 32/40 in its simplest form. =
  19. 19.Is 5/40 in its simplest form? (a) Yes (b) No
  20. 20.Write 21/35 in its simplest form. =
  21. 21.What is the HCF of 32 and 72?
  22. 22.Write 7/56 in its simplest form. =
  23. 23.Write 20/45 in its simplest form. =
  24. 24.What is the HCF of 10 and 14?
  25. 25.Is 7/9 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 3 and 18?
  27. 27.What is the HCF of 12 and 32?
  28. 28.What is the HCF of 18 and 30?
  29. 29.Write 10/16 in its simplest form. =
  30. 30.Write 12/18 in its simplest form. =
  31. 31.What is the HCF of 45 and 72?
  32. 32.Write 5/45 in its simplest form. =
  33. 33.Is 18/24 in its simplest form? (a) Yes (b) No
  34. 34.Is 1/8 in its simplest form? (a) No (b) Yes
  35. 35.Is 4/9 in its simplest form? (a) Yes (b) No
  36. 36.Write 4/20 in its simplest form. =
  37. 37.Write 28/32 in its simplest form. =
  38. 38.Write 16/24 in its simplest form. =
  39. 39.What is the HCF of 21 and 27?
  40. 40.Write 8/12 in its simplest form. =

Answer key

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

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