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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 422 · 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 12 and 16?
  2. 2.What is the HCF of 4 and 12?
  3. 3.Is 1/8 in its simplest form? (a) Yes (b) No
  4. 4.Write 24/40 in its simplest form. =
  5. 5.What is the HCF of 72 and 81?
  6. 6.Is 2/14 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 12 and 15?
  8. 8.Is 7/8 in its simplest form? (a) No (b) Yes
  9. 9.Is 20/35 in its simplest form? (a) Yes (b) No
  10. 10.Is 2/5 in its simplest form? (a) Yes (b) No
  11. 11.Write 14/63 in its simplest form. =
  12. 12.Write 6/21 in its simplest form. =
  13. 13.What is the HCF of 27 and 90?
  14. 14.Is 15/27 in its simplest form? (a) Yes (b) No
  15. 15.Write 48/54 in its simplest form. =
  16. 16.Write 9/54 in its simplest form. =
  17. 17.Is 6/15 in its simplest form? (a) No (b) Yes
  18. 18.Is 6/54 in its simplest form? (a) Yes (b) No
  19. 19.Is 1/3 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 12 and 54?
  21. 21.Write 35/63 in its simplest form. =
  22. 22.What is the HCF of 21 and 30?
  23. 23.Is 1/4 in its simplest form? (a) No (b) Yes
  24. 24.Is 30/42 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 3 and 24?
  26. 26.Write 36/42 in its simplest form. =
  27. 27.Write 32/40 in its simplest form. =
  28. 28.Is 5/7 in its simplest form? (a) No (b) Yes
  29. 29.Is 8/36 in its simplest form? (a) No (b) Yes
  30. 30.Write 6/30 in its simplest form. =
  31. 31.Write 8/48 in its simplest form. =
  32. 32.What is the HCF of 40 and 64?
  33. 33.Write 10/14 in its simplest form. =
  34. 34.Write 15/50 in its simplest form. =
  35. 35.Write 2/10 in its simplest form. =
  36. 36.Is 1/5 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 3 and 18?
  38. 38.What is the HCF of 3 and 12?
  39. 39.Write 54/60 in its simplest form. =
  40. 40.Write 3/27 in its simplest form. =

Answer key

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

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