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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 717 · 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 20/25 in its simplest form? (a) No (b) Yes
  2. 2.Is 15/40 in its simplest form? (a) No (b) Yes
  3. 3.Is 1/9 in its simplest form? (a) Yes (b) No
  4. 4.Is 1/7 in its simplest form? (a) Yes (b) No
  5. 5.Is 20/36 in its simplest form? (a) Yes (b) No
  6. 6.Write 16/40 in its simplest form. =
  7. 7.What is the HCF of 42 and 60?
  8. 8.Write 8/64 in its simplest form. =
  9. 9.Is 5/8 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 3 and 18?
  11. 11.Is 4/18 in its simplest form? (a) No (b) Yes
  12. 12.Write 25/30 in its simplest form. =
  13. 13.Write 27/45 in its simplest form. =
  14. 14.Write 16/36 in its simplest form. =
  15. 15.What is the HCF of 10 and 16?
  16. 16.Is 10/15 in its simplest form? (a) No (b) Yes
  17. 17.Is 27/30 in its simplest form? (a) No (b) Yes
  18. 18.Write 18/60 in its simplest form. =
  19. 19.What is the HCF of 3 and 9?
  20. 20.Write 18/27 in its simplest form. =
  21. 21.Write 5/30 in its simplest form. =
  22. 22.What is the HCF of 8 and 10?
  23. 23.Is 7/8 in its simplest form? (a) Yes (b) No
  24. 24.What is the HCF of 45 and 50?
  25. 25.Is 6/7 in its simplest form? (a) Yes (b) No
  26. 26.Write 12/20 in its simplest form. =
  27. 27.Is 3/10 in its simplest form? (a) No (b) Yes
  28. 28.Is 9/12 in its simplest form? (a) No (b) Yes
  29. 29.Write 9/81 in its simplest form. =
  30. 30.Write 5/25 in its simplest form. =
  31. 31.Is 4/24 in its simplest form? (a) Yes (b) No
  32. 32.Write 6/27 in its simplest form. =
  33. 33.Is 15/25 in its simplest form? (a) No (b) Yes
  34. 34.Write 4/18 in its simplest form. =
  35. 35.Write 42/60 in its simplest form. =
  36. 36.Is 6/9 in its simplest form? (a) Yes (b) No
  37. 37.Is 2/7 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 28 and 32?
  39. 39.Write 9/36 in its simplest form. =
  40. 40.Is 8/9 in its simplest form? (a) Yes (b) No

Answer key

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

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