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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 899 · 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 4/5 in its simplest form? (a) Yes (b) No
  2. 2.Write 5/10 in its simplest form. =
  3. 3.Write 6/30 in its simplest form. =
  4. 4.Write 25/45 in its simplest form. =
  5. 5.Write 2/6 in its simplest form. =
  6. 6.What is the HCF of 20 and 32?
  7. 7.Write 21/24 in its simplest form. =
  8. 8.Is 40/45 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 28 and 49?
  10. 10.Write 7/70 in its simplest form. =
  11. 11.Write 72/80 in its simplest form. =
  12. 12.Is 4/12 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 6 and 30?
  14. 14.What is the HCF of 30 and 42?
  15. 15.What is the HCF of 8 and 48?
  16. 16.What is the HCF of 12 and 30?
  17. 17.Is 5/8 in its simplest form? (a) Yes (b) No
  18. 18.Write 12/30 in its simplest form. =
  19. 19.Write 4/36 in its simplest form. =
  20. 20.Write 64/72 in its simplest form. =
  21. 21.Is 7/9 in its simplest form? (a) No (b) Yes
  22. 22.Write 2/14 in its simplest form. =
  23. 23.Is 9/10 in its simplest form? (a) No (b) Yes
  24. 24.Is 24/27 in its simplest form? (a) Yes (b) No
  25. 25.Write 18/42 in its simplest form. =
  26. 26.Write 9/36 in its simplest form. =
  27. 27.What is the HCF of 40 and 48?
  28. 28.Is 5/6 in its simplest form? (a) Yes (b) No
  29. 29.Write 8/14 in its simplest form. =
  30. 30.Is 28/40 in its simplest form? (a) No (b) Yes
  31. 31.Write 8/16 in its simplest form. =
  32. 32.Write 15/18 in its simplest form. =
  33. 33.Is 10/12 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 56 and 80?
  35. 35.What is the HCF of 24 and 28?
  36. 36.Write 9/12 in its simplest form. =
  37. 37.What is the HCF of 4 and 16?
  38. 38.What is the HCF of 25 and 30?
  39. 39.What is the HCF of 6 and 9?
  40. 40.Write 36/42 in its simplest form. =

Answer key

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

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