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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 165 · 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 9/10 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 18 and 60?
  3. 3.Write 10/45 in its simplest form. =
  4. 4.What is the HCF of 6 and 27?
  5. 5.Is 1/9 in its simplest form? (a) Yes (b) No
  6. 6.Is 16/28 in its simplest form? (a) No (b) Yes
  7. 7.Write 21/56 in its simplest form. =
  8. 8.Is 12/16 in its simplest form? (a) No (b) Yes
  9. 9.Is 2/10 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 8 and 20?
  11. 11.Is 18/60 in its simplest form? (a) No (b) Yes
  12. 12.Write 63/70 in its simplest form. =
  13. 13.What is the HCF of 2 and 16?
  14. 14.Write 15/21 in its simplest form. =
  15. 15.Write 8/10 in its simplest form. =
  16. 16.Write 5/30 in its simplest form. =
  17. 17.Write 3/27 in its simplest form. =
  18. 18.Is 3/6 in its simplest form? (a) Yes (b) No
  19. 19.Write 2/10 in its simplest form. =
  20. 20.Is 35/45 in its simplest form? (a) Yes (b) No
  21. 21.Is 25/40 in its simplest form? (a) Yes (b) No
  22. 22.Write 18/42 in its simplest form. =
  23. 23.Write 20/25 in its simplest form. =
  24. 24.Is 1/10 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 9 and 12?
  26. 26.What is the HCF of 25 and 45?
  27. 27.Write 35/49 in its simplest form. =
  28. 28.What is the HCF of 10 and 45?
  29. 29.Is 32/36 in its simplest form? (a) No (b) Yes
  30. 30.Is 2/14 in its simplest form? (a) No (b) Yes
  31. 31.Write 5/25 in its simplest form. =
  32. 32.Is 6/7 in its simplest form? (a) Yes (b) No
  33. 33.Is 35/40 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 3 and 9?
  35. 35.Is 4/7 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 12 and 15?
  37. 37.Is 3/4 in its simplest form? (a) Yes (b) No
  38. 38.Write 18/27 in its simplest form. =
  39. 39.Write 21/30 in its simplest form. =
  40. 40.What is the HCF of 36 and 45?

Answer key

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

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