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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 686 · 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.Is 18/20 in its simplest form? (a) No (b) Yes
  2. 2.Is 2/9 in its simplest form? (a) No (b) Yes
  3. 3.What is the HCF of 20 and 45?
  4. 4.Is 6/14 in its simplest form? (a) No (b) Yes
  5. 5.Is 1/10 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 16 and 40?
  7. 7.Is 3/7 in its simplest form? (a) Yes (b) No
  8. 8.Write 4/16 in its simplest form. =
  9. 9.Is 12/32 in its simplest form? (a) No (b) Yes
  10. 10.Write 12/27 in its simplest form. =
  11. 11.Write 18/48 in its simplest form. =
  12. 12.Write 30/35 in its simplest form. =
  13. 13.Is 2/20 in its simplest form? (a) Yes (b) No
  14. 14.Write 15/18 in its simplest form. =
  15. 15.Write 3/6 in its simplest form. =
  16. 16.Write 8/28 in its simplest form. =
  17. 17.Write 10/45 in its simplest form. =
  18. 18.Write 10/14 in its simplest form. =
  19. 19.Write 16/24 in its simplest form. =
  20. 20.Write 16/40 in its simplest form. =
  21. 21.What is the HCF of 3 and 15?
  22. 22.Is 5/45 in its simplest form? (a) Yes (b) No
  23. 23.Is 1/3 in its simplest form? (a) No (b) Yes
  24. 24.Write 21/28 in its simplest form. =
  25. 25.What is the HCF of 16 and 36?
  26. 26.Write 12/32 in its simplest form. =
  27. 27.What is the HCF of 4 and 20?
  28. 28.Write 15/24 in its simplest form. =
  29. 29.What is the HCF of 24 and 80?
  30. 30.Write 15/27 in its simplest form. =
  31. 31.Write 3/18 in its simplest form. =
  32. 32.Is 7/10 in its simplest form? (a) No (b) Yes
  33. 33.Is 6/18 in its simplest form? (a) Yes (b) No
  34. 34.Write 63/81 in its simplest form. =
  35. 35.Write 32/40 in its simplest form. =
  36. 36.Is 6/8 in its simplest form? (a) No (b) Yes
  37. 37.Write 8/48 in its simplest form. =
  38. 38.What is the HCF of 21 and 27?
  39. 39.Is 25/30 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 9 and 27?

Answer key

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

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