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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 136 · 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 8/12 in its simplest form? (a) Yes (b) No
  2. 2.Is 2/16 in its simplest form? (a) No (b) Yes
  3. 3.Write 49/63 in its simplest form. =
  4. 4.Write 7/35 in its simplest form. =
  5. 5.What is the HCF of 7 and 28?
  6. 6.What is the HCF of 45 and 72?
  7. 7.Write 45/63 in its simplest form. =
  8. 8.What is the HCF of 42 and 60?
  9. 9.Write 27/63 in its simplest form. =
  10. 10.Write 54/60 in its simplest form. =
  11. 11.Write 12/30 in its simplest form. =
  12. 12.Write 21/28 in its simplest form. =
  13. 13.Write 45/81 in its simplest form. =
  14. 14.Is 15/35 in its simplest form? (a) No (b) Yes
  15. 15.Write 25/40 in its simplest form. =
  16. 16.What is the HCF of 7 and 70?
  17. 17.Is 1/6 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 72 and 81?
  19. 19.What is the HCF of 3 and 21?
  20. 20.Write 3/9 in its simplest form. =
  21. 21.What is the HCF of 18 and 81?
  22. 22.Is 7/8 in its simplest form? (a) No (b) Yes
  23. 23.Is 2/18 in its simplest form? (a) Yes (b) No
  24. 24.Is 5/7 in its simplest form? (a) Yes (b) No
  25. 25.Is 1/10 in its simplest form? (a) Yes (b) No
  26. 26.Write 18/45 in its simplest form. =
  27. 27.What is the HCF of 8 and 32?
  28. 28.Is 3/21 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 2 and 16?
  30. 30.Write 21/35 in its simplest form. =
  31. 31.What is the HCF of 8 and 18?
  32. 32.Write 6/36 in its simplest form. =
  33. 33.Is 2/7 in its simplest form? (a) Yes (b) No
  34. 34.Is 36/40 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 15 and 50?
  36. 36.Is 8/10 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 9 and 45?
  38. 38.Is 3/8 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 36 and 45?
  40. 40.Is 12/27 in its simplest form? (a) Yes (b) No

Answer key

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

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