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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 15 · 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 4/16 in its simplest form? (a) Yes (b) No
  2. 2.Write 25/30 in its simplest form. =
  3. 3.What is the HCF of 10 and 25?
  4. 4.What is the HCF of 27 and 45?
  5. 5.Write 27/63 in its simplest form. =
  6. 6.What is the HCF of 48 and 54?
  7. 7.Write 63/70 in its simplest form. =
  8. 8.Write 21/27 in its simplest form. =
  9. 9.Is 2/5 in its simplest form? (a) No (b) Yes
  10. 10.Write 18/30 in its simplest form. =
  11. 11.Write 35/42 in its simplest form. =
  12. 12.What is the HCF of 35 and 45?
  13. 13.Write 36/81 in its simplest form. =
  14. 14.Write 35/45 in its simplest form. =
  15. 15.Is 7/8 in its simplest form? (a) No (b) Yes
  16. 16.Write 6/48 in its simplest form. =
  17. 17.Write 6/21 in its simplest form. =
  18. 18.Is 20/28 in its simplest form? (a) Yes (b) No
  19. 19.Is 4/10 in its simplest form? (a) Yes (b) No
  20. 20.Is 1/4 in its simplest form? (a) Yes (b) No
  21. 21.Write 6/36 in its simplest form. =
  22. 22.Write 10/12 in its simplest form. =
  23. 23.What is the HCF of 49 and 63?
  24. 24.What is the HCF of 6 and 16?
  25. 25.What is the HCF of 6 and 30?
  26. 26.Write 6/15 in its simplest form. =
  27. 27.Is 3/9 in its simplest form? (a) No (b) Yes
  28. 28.Is 15/18 in its simplest form? (a) Yes (b) No
  29. 29.Is 1/9 in its simplest form? (a) Yes (b) No
  30. 30.Write 8/36 in its simplest form. =
  31. 31.Write 6/16 in its simplest form. =
  32. 32.Write 16/40 in its simplest form. =
  33. 33.Is 20/36 in its simplest form? (a) Yes (b) No
  34. 34.Write 4/28 in its simplest form. =
  35. 35.Is 21/24 in its simplest form? (a) Yes (b) No
  36. 36.Is 4/6 in its simplest form? (a) Yes (b) No
  37. 37.Is 24/28 in its simplest form? (a) No (b) Yes
  38. 38.Write 8/24 in its simplest form. =
  39. 39.Is 9/21 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 36 and 40?

Answer key

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

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