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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 300 · 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 15/20 in its simplest form? (a) Yes (b) No
  2. 2.Write 72/81 in its simplest form. =
  3. 3.Is 5/7 in its simplest form? (a) No (b) Yes
  4. 4.Write 9/18 in its simplest form. =
  5. 5.Is 2/9 in its simplest form? (a) Yes (b) No
  6. 6.Is 7/9 in its simplest form? (a) No (b) Yes
  7. 7.Write 8/16 in its simplest form. =
  8. 8.What is the HCF of 8 and 16?
  9. 9.What is the HCF of 28 and 35?
  10. 10.Write 6/30 in its simplest form. =
  11. 11.Write 48/54 in its simplest form. =
  12. 12.What is the HCF of 3 and 6?
  13. 13.Write 20/25 in its simplest form. =
  14. 14.Is 2/4 in its simplest form? (a) No (b) Yes
  15. 15.Is 2/5 in its simplest form? (a) No (b) Yes
  16. 16.Write 9/45 in its simplest form. =
  17. 17.Write 15/18 in its simplest form. =
  18. 18.What is the HCF of 9 and 18?
  19. 19.Write 15/24 in its simplest form. =
  20. 20.Write 16/40 in its simplest form. =
  21. 21.What is the HCF of 2 and 16?
  22. 22.What is the HCF of 64 and 72?
  23. 23.Write 4/36 in its simplest form. =
  24. 24.Write 14/20 in its simplest form. =
  25. 25.Write 8/64 in its simplest form. =
  26. 26.Is 7/8 in its simplest form? (a) No (b) Yes
  27. 27.Write 4/16 in its simplest form. =
  28. 28.Write 30/48 in its simplest form. =
  29. 29.Write 5/40 in its simplest form. =
  30. 30.Is 20/24 in its simplest form? (a) Yes (b) No
  31. 31.Is 21/24 in its simplest form? (a) No (b) Yes
  32. 32.Is 5/8 in its simplest form? (a) No (b) Yes
  33. 33.Is 6/9 in its simplest form? (a) Yes (b) No
  34. 34.Is 3/27 in its simplest form? (a) No (b) Yes
  35. 35.Write 3/24 in its simplest form. =
  36. 36.What is the HCF of 9 and 24?
  37. 37.Is 1/3 in its simplest form? (a) Yes (b) No
  38. 38.Is 6/16 in its simplest form? (a) Yes (b) No
  39. 39.Is 15/35 in its simplest form? (a) No (b) Yes
  40. 40.Write 45/54 in its simplest form. =

Answer key

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

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