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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 5 · 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 25/45 in its simplest form. =
  2. 2.Is 8/9 in its simplest form? (a) No (b) Yes
  3. 3.Is 3/4 in its simplest form? (a) Yes (b) No
  4. 4.Write 45/81 in its simplest form. =
  5. 5.What is the HCF of 4 and 28?
  6. 6.Write 8/16 in its simplest form. =
  7. 7.Write 4/18 in its simplest form. =
  8. 8.Write 6/54 in its simplest form. =
  9. 9.Is 10/25 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 2 and 18?
  11. 11.Write 14/18 in its simplest form. =
  12. 12.Write 9/15 in its simplest form. =
  13. 13.What is the HCF of 4 and 18?
  14. 14.Write 9/36 in its simplest form. =
  15. 15.What is the HCF of 9 and 15?
  16. 16.Write 24/30 in its simplest form. =
  17. 17.What is the HCF of 7 and 42?
  18. 18.Is 20/35 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 10 and 25?
  20. 20.What is the HCF of 2 and 14?
  21. 21.Write 12/21 in its simplest form. =
  22. 22.What is the HCF of 14 and 35?
  23. 23.Write 4/10 in its simplest form. =
  24. 24.Write 9/12 in its simplest form. =
  25. 25.Write 21/27 in its simplest form. =
  26. 26.What is the HCF of 12 and 54?
  27. 27.What is the HCF of 9 and 72?
  28. 28.Write 18/45 in its simplest form. =
  29. 29.What is the HCF of 8 and 28?
  30. 30.Is 2/5 in its simplest form? (a) No (b) Yes
  31. 31.Write 14/20 in its simplest form. =
  32. 32.What is the HCF of 8 and 64?
  33. 33.Is 6/7 in its simplest form? (a) No (b) Yes
  34. 34.Is 1/5 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 4 and 16?
  36. 36.Is 6/10 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 4 and 36?
  38. 38.Is 10/14 in its simplest form? (a) No (b) Yes
  39. 39.Is 12/42 in its simplest form? (a) No (b) Yes
  40. 40.Is 3/12 in its simplest form? (a) No (b) Yes

Answer key

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

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