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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 623 · 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 16/20 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 18 and 48?
  3. 3.Is 6/8 in its simplest form? (a) Yes (b) No
  4. 4.Is 21/30 in its simplest form? (a) Yes (b) No
  5. 5.Write 21/28 in its simplest form. =
  6. 6.Write 16/18 in its simplest form. =
  7. 7.Write 12/27 in its simplest form. =
  8. 8.Is 12/18 in its simplest form? (a) Yes (b) No
  9. 9.Is 16/28 in its simplest form? (a) Yes (b) No
  10. 10.Is 1/8 in its simplest form? (a) Yes (b) No
  11. 11.Write 18/45 in its simplest form. =
  12. 12.What is the HCF of 24 and 40?
  13. 13.Is 1/4 in its simplest form? (a) No (b) Yes
  14. 14.Write 6/48 in its simplest form. =
  15. 15.Write 10/15 in its simplest form. =
  16. 16.Write 6/12 in its simplest form. =
  17. 17.Write 12/16 in its simplest form. =
  18. 18.Write 25/40 in its simplest form. =
  19. 19.What is the HCF of 6 and 16?
  20. 20.Is 12/42 in its simplest form? (a) Yes (b) No
  21. 21.Write 8/28 in its simplest form. =
  22. 22.What is the HCF of 27 and 45?
  23. 23.Is 6/27 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 4 and 36?
  25. 25.What is the HCF of 8 and 20?
  26. 26.Is 3/21 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 25 and 35?
  28. 28.What is the HCF of 18 and 21?
  29. 29.What is the HCF of 36 and 42?
  30. 30.Write 6/54 in its simplest form. =
  31. 31.What is the HCF of 10 and 45?
  32. 32.Is 6/42 in its simplest form? (a) No (b) Yes
  33. 33.Write 15/24 in its simplest form. =
  34. 34.What is the HCF of 63 and 81?
  35. 35.Write 10/14 in its simplest form. =
  36. 36.Write 14/63 in its simplest form. =
  37. 37.Is 2/12 in its simplest form? (a) Yes (b) No
  38. 38.Is 12/54 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 18 and 63?
  40. 40.What is the HCF of 15 and 21?

Answer key

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

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