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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 878 · 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 15/20 in its simplest form. =
  2. 2.Write 8/14 in its simplest form. =
  3. 3.Write 4/8 in its simplest form. =
  4. 4.Write 40/45 in its simplest form. =
  5. 5.Is 4/18 in its simplest form? (a) Yes (b) No
  6. 6.Write 8/18 in its simplest form. =
  7. 7.What is the HCF of 10 and 14?
  8. 8.Is 7/8 in its simplest form? (a) No (b) Yes
  9. 9.Write 35/42 in its simplest form. =
  10. 10.Is 2/4 in its simplest form? (a) Yes (b) No
  11. 11.Write 4/36 in its simplest form. =
  12. 12.Is 1/3 in its simplest form? (a) No (b) Yes
  13. 13.Is 20/35 in its simplest form? (a) Yes (b) No
  14. 14.Write 4/10 in its simplest form. =
  15. 15.Write 49/70 in its simplest form. =
  16. 16.Write 15/35 in its simplest form. =
  17. 17.Is 1/9 in its simplest form? (a) No (b) Yes
  18. 18.Write 4/6 in its simplest form. =
  19. 19.Is 10/18 in its simplest form? (a) No (b) Yes
  20. 20.Is 10/45 in its simplest form? (a) Yes (b) No
  21. 21.Is 8/20 in its simplest form? (a) No (b) Yes
  22. 22.Write 6/54 in its simplest form. =
  23. 23.Write 18/24 in its simplest form. =
  24. 24.Write 7/21 in its simplest form. =
  25. 25.What is the HCF of 4 and 36?
  26. 26.Write 18/45 in its simplest form. =
  27. 27.Is 3/10 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 3 and 21?
  29. 29.Is 4/5 in its simplest form? (a) Yes (b) No
  30. 30.Write 3/18 in its simplest form. =
  31. 31.Is 2/12 in its simplest form? (a) No (b) Yes
  32. 32.Write 10/25 in its simplest form. =
  33. 33.Is 1/4 in its simplest form? (a) Yes (b) No
  34. 34.Is 3/8 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 6 and 24?
  36. 36.Is 1/7 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 28 and 35?
  38. 38.Is 8/9 in its simplest form? (a) Yes (b) No
  39. 39.Is 2/3 in its simplest form? (a) No (b) Yes
  40. 40.Write 9/81 in its simplest form. =

Answer key

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

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