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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 349 · 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 2/4 in its simplest form. =
  2. 2.Write 6/30 in its simplest form. =
  3. 3.Write 5/30 in its simplest form. =
  4. 4.Is 3/10 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 24 and 27?
  6. 6.Write 18/21 in its simplest form. =
  7. 7.Is 2/5 in its simplest form? (a) Yes (b) No
  8. 8.Is 6/10 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 9 and 18?
  10. 10.Write 6/42 in its simplest form. =
  11. 11.What is the HCF of 8 and 56?
  12. 12.Is 8/36 in its simplest form? (a) No (b) Yes
  13. 13.Is 40/45 in its simplest form? (a) Yes (b) No
  14. 14.Write 27/45 in its simplest form. =
  15. 15.Is 3/8 in its simplest form? (a) No (b) Yes
  16. 16.What is the HCF of 3 and 9?
  17. 17.Write 10/45 in its simplest form. =
  18. 18.Is 12/21 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 25 and 30?
  20. 20.Is 9/12 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 28 and 36?
  22. 22.Is 6/48 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 15 and 21?
  24. 24.Is 12/18 in its simplest form? (a) Yes (b) No
  25. 25.Is 7/8 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 24 and 54?
  27. 27.What is the HCF of 24 and 42?
  28. 28.Write 4/8 in its simplest form. =
  29. 29.Is 8/9 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 4 and 40?
  31. 31.Is 1/5 in its simplest form? (a) No (b) Yes
  32. 32.Write 14/21 in its simplest form. =
  33. 33.Write 16/40 in its simplest form. =
  34. 34.What is the HCF of 9 and 30?
  35. 35.Write 15/40 in its simplest form. =
  36. 36.Write 2/18 in its simplest form. =
  37. 37.What is the HCF of 9 and 90?
  38. 38.What is the HCF of 20 and 25?
  39. 39.Write 10/18 in its simplest form. =
  40. 40.What is the HCF of 6 and 30?

Answer key

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

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