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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 811 · 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 18/20 in its simplest form. =
  2. 2.Write 30/54 in its simplest form. =
  3. 3.Write 27/90 in its simplest form. =
  4. 4.Write 12/28 in its simplest form. =
  5. 5.Write 7/49 in its simplest form. =
  6. 6.Write 45/81 in its simplest form. =
  7. 7.What is the HCF of 6 and 20?
  8. 8.Is 4/24 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 8 and 20?
  10. 10.Write 3/30 in its simplest form. =
  11. 11.Write 25/30 in its simplest form. =
  12. 12.Is 8/9 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 24 and 40?
  14. 14.What is the HCF of 4 and 20?
  15. 15.Is 9/15 in its simplest form? (a) No (b) Yes
  16. 16.Write 8/10 in its simplest form. =
  17. 17.Write 4/6 in its simplest form. =
  18. 18.Is 2/3 in its simplest form? (a) Yes (b) No
  19. 19.Is 15/24 in its simplest form? (a) Yes (b) No
  20. 20.Is 9/10 in its simplest form? (a) No (b) Yes
  21. 21.Write 15/40 in its simplest form. =
  22. 22.Write 8/16 in its simplest form. =
  23. 23.Is 2/5 in its simplest form? (a) No (b) Yes
  24. 24.Write 24/54 in its simplest form. =
  25. 25.Is 1/4 in its simplest form? (a) No (b) Yes
  26. 26.Write 16/36 in its simplest form. =
  27. 27.Is 3/5 in its simplest form? (a) Yes (b) No
  28. 28.Is 3/24 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 12 and 21?
  30. 30.What is the HCF of 18 and 81?
  31. 31.Write 15/18 in its simplest form. =
  32. 32.Write 14/21 in its simplest form. =
  33. 33.Write 7/28 in its simplest form. =
  34. 34.Write 14/20 in its simplest form. =
  35. 35.Is 25/30 in its simplest form? (a) Yes (b) No
  36. 36.Write 24/56 in its simplest form. =
  37. 37.What is the HCF of 40 and 45?
  38. 38.Write 2/12 in its simplest form. =
  39. 39.What is the HCF of 72 and 81?
  40. 40.What is the HCF of 14 and 21?

Answer key

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

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