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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 205 · 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 12/32 in its simplest form? (a) No (b) Yes
  2. 2.Write 10/18 in its simplest form. =
  3. 3.Is 12/20 in its simplest form? (a) Yes (b) No
  4. 4.Write 15/40 in its simplest form. =
  5. 5.What is the HCF of 20 and 35?
  6. 6.Is 2/7 in its simplest form? (a) Yes (b) No
  7. 7.Is 8/9 in its simplest form? (a) Yes (b) No
  8. 8.Is 30/48 in its simplest form? (a) No (b) Yes
  9. 9.Is 25/45 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 8 and 20?
  11. 11.Is 5/40 in its simplest form? (a) No (b) Yes
  12. 12.Write 8/18 in its simplest form. =
  13. 13.What is the HCF of 15 and 27?
  14. 14.Write 5/15 in its simplest form. =
  15. 15.What is the HCF of 3 and 9?
  16. 16.What is the HCF of 12 and 20?
  17. 17.Is 4/14 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 30 and 48?
  19. 19.Write 8/20 in its simplest form. =
  20. 20.Write 9/90 in its simplest form. =
  21. 21.What is the HCF of 5 and 45?
  22. 22.What is the HCF of 4 and 28?
  23. 23.Is 3/5 in its simplest form? (a) No (b) Yes
  24. 24.Is 5/9 in its simplest form? (a) No (b) Yes
  25. 25.Is 6/20 in its simplest form? (a) No (b) Yes
  26. 26.Is 14/18 in its simplest form? (a) No (b) Yes
  27. 27.What is the HCF of 36 and 40?
  28. 28.What is the HCF of 24 and 27?
  29. 29.What is the HCF of 7 and 35?
  30. 30.Write 3/12 in its simplest form. =
  31. 31.Is 24/42 in its simplest form? (a) No (b) Yes
  32. 32.Is 1/5 in its simplest form? (a) No (b) Yes
  33. 33.Write 4/10 in its simplest form. =
  34. 34.What is the HCF of 36 and 45?
  35. 35.Write 12/30 in its simplest form. =
  36. 36.What is the HCF of 14 and 18?
  37. 37.Is 2/5 in its simplest form? (a) Yes (b) No
  38. 38.Write 36/45 in its simplest form. =
  39. 39.Write 30/42 in its simplest form. =
  40. 40.Is 54/60 in its simplest form? (a) No (b) Yes

Answer key

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

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