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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 60 · 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 4/12 in its simplest form. =
  2. 2.Write 32/72 in its simplest form. =
  3. 3.Is 1/5 in its simplest form? (a) Yes (b) No
  4. 4.Is 2/10 in its simplest form? (a) No (b) Yes
  5. 5.Write 35/42 in its simplest form. =
  6. 6.Write 5/40 in its simplest form. =
  7. 7.Is 6/14 in its simplest form? (a) No (b) Yes
  8. 8.Write 14/35 in its simplest form. =
  9. 9.Write 12/18 in its simplest form. =
  10. 10.Is 2/5 in its simplest form? (a) Yes (b) No
  11. 11.Write 24/42 in its simplest form. =
  12. 12.Is 1/7 in its simplest form? (a) Yes (b) No
  13. 13.Write 28/40 in its simplest form. =
  14. 14.What is the HCF of 32 and 40?
  15. 15.Write 16/24 in its simplest form. =
  16. 16.Write 8/56 in its simplest form. =
  17. 17.What is the HCF of 35 and 56?
  18. 18.What is the HCF of 30 and 54?
  19. 19.Write 9/81 in its simplest form. =
  20. 20.What is the HCF of 9 and 27?
  21. 21.Write 9/18 in its simplest form. =
  22. 22.Write 9/36 in its simplest form. =
  23. 23.Write 9/15 in its simplest form. =
  24. 24.What is the HCF of 25 and 30?
  25. 25.Write 4/24 in its simplest form. =
  26. 26.Write 25/35 in its simplest form. =
  27. 27.Write 36/42 in its simplest form. =
  28. 28.Is 30/36 in its simplest form? (a) Yes (b) No
  29. 29.Write 7/56 in its simplest form. =
  30. 30.Is 1/4 in its simplest form? (a) No (b) Yes
  31. 31.Write 10/25 in its simplest form. =
  32. 32.Is 4/28 in its simplest form? (a) Yes (b) No
  33. 33.Is 16/20 in its simplest form? (a) Yes (b) No
  34. 34.Write 15/27 in its simplest form. =
  35. 35.What is the HCF of 18 and 45?
  36. 36.Is 3/9 in its simplest form? (a) No (b) Yes
  37. 37.Write 24/32 in its simplest form. =
  38. 38.Is 3/8 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 7 and 28?
  40. 40.Is 4/20 in its simplest form? (a) No (b) Yes

Answer key

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

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