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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 203 · 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 6/18 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 9 and 15?
  3. 3.Write 64/72 in its simplest form. =
  4. 4.What is the HCF of 3 and 18?
  5. 5.Is 7/9 in its simplest form? (a) No (b) Yes
  6. 6.Write 21/27 in its simplest form. =
  7. 7.Is 8/18 in its simplest form? (a) No (b) Yes
  8. 8.Is 10/45 in its simplest form? (a) No (b) Yes
  9. 9.Is 5/25 in its simplest form? (a) Yes (b) No
  10. 10.Is 2/5 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 9 and 21?
  12. 12.What is the HCF of 12 and 14?
  13. 13.Is 1/2 in its simplest form? (a) Yes (b) No
  14. 14.Write 27/45 in its simplest form. =
  15. 15.What is the HCF of 4 and 28?
  16. 16.Write 15/50 in its simplest form. =
  17. 17.Is 2/4 in its simplest form? (a) No (b) Yes
  18. 18.Write 18/30 in its simplest form. =
  19. 19.Write 4/32 in its simplest form. =
  20. 20.What is the HCF of 10 and 35?
  21. 21.Write 16/28 in its simplest form. =
  22. 22.What is the HCF of 45 and 72?
  23. 23.What is the HCF of 45 and 54?
  24. 24.Write 32/40 in its simplest form. =
  25. 25.Write 25/30 in its simplest form. =
  26. 26.Write 12/28 in its simplest form. =
  27. 27.What is the HCF of 9 and 27?
  28. 28.What is the HCF of 16 and 36?
  29. 29.What is the HCF of 6 and 16?
  30. 30.Is 9/12 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 18 and 24?
  32. 32.Is 4/18 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 3 and 21?
  34. 34.Is 28/40 in its simplest form? (a) No (b) Yes
  35. 35.Write 18/81 in its simplest form. =
  36. 36.Write 6/48 in its simplest form. =
  37. 37.Is 8/9 in its simplest form? (a) Yes (b) No
  38. 38.Is 16/36 in its simplest form? (a) No (b) Yes
  39. 39.Is 30/35 in its simplest form? (a) Yes (b) No
  40. 40.Write 24/30 in its simplest form. =

Answer key

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

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