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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 409 · 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.What is the HCF of 27 and 30?
  2. 2.Write 7/56 in its simplest form. =
  3. 3.Is 2/7 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 27 and 90?
  5. 5.Write 25/40 in its simplest form. =
  6. 6.What is the HCF of 7 and 14?
  7. 7.Is 3/10 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 10 and 25?
  9. 9.Write 9/18 in its simplest form. =
  10. 10.Write 12/21 in its simplest form. =
  11. 11.Is 24/42 in its simplest form? (a) Yes (b) No
  12. 12.Is 40/45 in its simplest form? (a) Yes (b) No
  13. 13.Is 1/7 in its simplest form? (a) Yes (b) No
  14. 14.Is 5/7 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 18 and 48?
  16. 16.Write 10/12 in its simplest form. =
  17. 17.Is 6/42 in its simplest form? (a) No (b) Yes
  18. 18.Write 6/10 in its simplest form. =
  19. 19.What is the HCF of 24 and 32?
  20. 20.Write 3/15 in its simplest form. =
  21. 21.Write 36/81 in its simplest form. =
  22. 22.Write 4/28 in its simplest form. =
  23. 23.Is 8/36 in its simplest form? (a) No (b) Yes
  24. 24.Is 25/45 in its simplest form? (a) No (b) Yes
  25. 25.Write 3/24 in its simplest form. =
  26. 26.Is 7/8 in its simplest form? (a) No (b) Yes
  27. 27.Write 8/80 in its simplest form. =
  28. 28.Is 3/5 in its simplest form? (a) Yes (b) No
  29. 29.Is 1/3 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 16 and 24?
  31. 31.Write 20/32 in its simplest form. =
  32. 32.Is 3/21 in its simplest form? (a) Yes (b) No
  33. 33.Write 9/24 in its simplest form. =
  34. 34.Is 10/15 in its simplest form? (a) No (b) Yes
  35. 35.Write 16/18 in its simplest form. =
  36. 36.Write 12/18 in its simplest form. =
  37. 37.What is the HCF of 12 and 54?
  38. 38.Is 15/21 in its simplest form? (a) Yes (b) No
  39. 39.Is 4/5 in its simplest form? (a) No (b) Yes
  40. 40.Write 8/20 in its simplest form. =

Answer key

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

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