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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 362 · 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 5/30 in its simplest form. =
  2. 2.Write 2/4 in its simplest form. =
  3. 3.What is the HCF of 14 and 18?
  4. 4.Write 18/63 in its simplest form. =
  5. 5.What is the HCF of 21 and 27?
  6. 6.What is the HCF of 3 and 15?
  7. 7.Is 3/10 in its simplest form? (a) No (b) Yes
  8. 8.Is 1/2 in its simplest form? (a) No (b) Yes
  9. 9.Is 10/18 in its simplest form? (a) Yes (b) No
  10. 10.Is 5/20 in its simplest form? (a) Yes (b) No
  11. 11.Write 72/81 in its simplest form. =
  12. 12.What is the HCF of 16 and 18?
  13. 13.What is the HCF of 16 and 20?
  14. 14.Write 12/54 in its simplest form. =
  15. 15.Write 2/8 in its simplest form. =
  16. 16.What is the HCF of 6 and 30?
  17. 17.Is 5/8 in its simplest form? (a) No (b) Yes
  18. 18.Write 21/30 in its simplest form. =
  19. 19.Write 6/8 in its simplest form. =
  20. 20.Is 9/12 in its simplest form? (a) Yes (b) No
  21. 21.Write 20/28 in its simplest form. =
  22. 22.What is the HCF of 42 and 48?
  23. 23.Is 2/3 in its simplest form? (a) Yes (b) No
  24. 24.Write 9/15 in its simplest form. =
  25. 25.Is 1/9 in its simplest form? (a) No (b) Yes
  26. 26.Write 7/21 in its simplest form. =
  27. 27.Is 6/9 in its simplest form? (a) No (b) Yes
  28. 28.Write 14/49 in its simplest form. =
  29. 29.Is 25/30 in its simplest form? (a) No (b) Yes
  30. 30.Is 6/42 in its simplest form? (a) No (b) Yes
  31. 31.Write 3/6 in its simplest form. =
  32. 32.Write 35/45 in its simplest form. =
  33. 33.Is 16/36 in its simplest form? (a) No (b) Yes
  34. 34.Write 18/45 in its simplest form. =
  35. 35.What is the HCF of 14 and 20?
  36. 36.Write 5/45 in its simplest form. =
  37. 37.Is 4/9 in its simplest form? (a) Yes (b) No
  38. 38.Is 15/24 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 24 and 40?
  40. 40.What is the HCF of 3 and 21?

Answer key

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

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