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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 326 · 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.Write 24/27 in its simplest form. =
  2. 2.Is 10/45 in its simplest form? (a) Yes (b) No
  3. 3.Write 5/45 in its simplest form. =
  4. 4.Write 15/24 in its simplest form. =
  5. 5.Is 5/25 in its simplest form? (a) No (b) Yes
  6. 6.Write 4/40 in its simplest form. =
  7. 7.What is the HCF of 15 and 24?
  8. 8.Is 7/8 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 27 and 90?
  10. 10.Write 9/15 in its simplest form. =
  11. 11.What is the HCF of 6 and 30?
  12. 12.Write 2/14 in its simplest form. =
  13. 13.Write 8/16 in its simplest form. =
  14. 14.Is 2/9 in its simplest form? (a) No (b) Yes
  15. 15.Write 49/56 in its simplest form. =
  16. 16.Is 6/10 in its simplest form? (a) Yes (b) No
  17. 17.Write 15/40 in its simplest form. =
  18. 18.Is 5/10 in its simplest form? (a) No (b) Yes
  19. 19.Write 35/42 in its simplest form. =
  20. 20.Is 1/3 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 18 and 42?
  22. 22.Write 8/20 in its simplest form. =
  23. 23.Write 24/28 in its simplest form. =
  24. 24.Is 2/3 in its simplest form? (a) Yes (b) No
  25. 25.Write 3/27 in its simplest form. =
  26. 26.Write 8/32 in its simplest form. =
  27. 27.Is 5/40 in its simplest form? (a) No (b) Yes
  28. 28.Is 6/7 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 3 and 24?
  30. 30.Write 72/80 in its simplest form. =
  31. 31.Is 1/8 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 28 and 49?
  33. 33.What is the HCF of 8 and 80?
  34. 34.Is 7/9 in its simplest form? (a) No (b) Yes
  35. 35.Is 4/12 in its simplest form? (a) Yes (b) No
  36. 36.Write 28/40 in its simplest form. =
  37. 37.Is 2/14 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 9 and 81?
  39. 39.Write 40/48 in its simplest form. =
  40. 40.What is the HCF of 45 and 50?

Answer key

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

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