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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 151 · 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 2/14 in its simplest form? (a) Yes (b) No
  2. 2.Write 8/18 in its simplest form. =
  3. 3.What is the HCF of 12 and 16?
  4. 4.What is the HCF of 15 and 25?
  5. 5.What is the HCF of 35 and 63?
  6. 6.Is 35/45 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 49 and 70?
  8. 8.What is the HCF of 25 and 40?
  9. 9.Is 7/10 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 9 and 90?
  11. 11.Is 1/9 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 27 and 30?
  13. 13.What is the HCF of 6 and 15?
  14. 14.Write 45/54 in its simplest form. =
  15. 15.What is the HCF of 6 and 20?
  16. 16.Is 6/27 in its simplest form? (a) Yes (b) No
  17. 17.Is 3/4 in its simplest form? (a) No (b) Yes
  18. 18.Write 10/14 in its simplest form. =
  19. 19.Write 54/60 in its simplest form. =
  20. 20.Write 25/40 in its simplest form. =
  21. 21.Is 20/32 in its simplest form? (a) No (b) Yes
  22. 22.Is 32/36 in its simplest form? (a) No (b) Yes
  23. 23.Write 18/45 in its simplest form. =
  24. 24.Write 18/42 in its simplest form. =
  25. 25.Is 2/8 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 12 and 28?
  27. 27.What is the HCF of 81 and 90?
  28. 28.Write 2/6 in its simplest form. =
  29. 29.Is 7/8 in its simplest form? (a) No (b) Yes
  30. 30.Is 15/21 in its simplest form? (a) Yes (b) No
  31. 31.Write 8/20 in its simplest form. =
  32. 32.Write 10/15 in its simplest form. =
  33. 33.Is 2/3 in its simplest form? (a) Yes (b) No
  34. 34.Is 5/7 in its simplest form? (a) No (b) Yes
  35. 35.Write 3/27 in its simplest form. =
  36. 36.What is the HCF of 16 and 40?
  37. 37.Write 10/45 in its simplest form. =
  38. 38.Is 4/5 in its simplest form? (a) No (b) Yes
  39. 39.Write 30/54 in its simplest form. =
  40. 40.What is the HCF of 63 and 70?

Answer key

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

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