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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 662 · 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 6/21 in its simplest form. =
  2. 2.What is the HCF of 4 and 40?
  3. 3.Is 6/20 in its simplest form? (a) Yes (b) No
  4. 4.Write 21/35 in its simplest form. =
  5. 5.Is 30/36 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 48 and 54?
  7. 7.Is 1/2 in its simplest form? (a) No (b) Yes
  8. 8.Is 1/3 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 25 and 40?
  10. 10.Is 2/3 in its simplest form? (a) No (b) Yes
  11. 11.Write 10/12 in its simplest form. =
  12. 12.What is the HCF of 16 and 20?
  13. 13.Write 28/36 in its simplest form. =
  14. 14.What is the HCF of 72 and 80?
  15. 15.What is the HCF of 21 and 56?
  16. 16.What is the HCF of 28 and 63?
  17. 17.Is 5/8 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 12 and 42?
  19. 19.Is 5/9 in its simplest form? (a) Yes (b) No
  20. 20.Write 14/49 in its simplest form. =
  21. 21.Write 4/10 in its simplest form. =
  22. 22.Is 2/5 in its simplest form? (a) Yes (b) No
  23. 23.Write 30/42 in its simplest form. =
  24. 24.Write 30/36 in its simplest form. =
  25. 25.What is the HCF of 12 and 32?
  26. 26.What is the HCF of 15 and 20?
  27. 27.Write 6/24 in its simplest form. =
  28. 28.What is the HCF of 32 and 40?
  29. 29.Write 3/18 in its simplest form. =
  30. 30.Is 4/6 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 12 and 30?
  32. 32.Write 49/56 in its simplest form. =
  33. 33.Is 7/9 in its simplest form? (a) No (b) Yes
  34. 34.Is 3/10 in its simplest form? (a) Yes (b) No
  35. 35.Write 24/54 in its simplest form. =
  36. 36.Write 18/81 in its simplest form. =
  37. 37.What is the HCF of 21 and 28?
  38. 38.Write 15/27 in its simplest form. =
  39. 39.Write 30/48 in its simplest form. =
  40. 40.Write 20/24 in its simplest form. =

Answer key

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

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