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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 115 · 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.What is the HCF of 9 and 81?
  2. 2.Write 6/42 in its simplest form. =
  3. 3.Is 1/8 in its simplest form? (a) No (b) Yes
  4. 4.Write 2/20 in its simplest form. =
  5. 5.Is 24/27 in its simplest form? (a) No (b) Yes
  6. 6.Is 8/36 in its simplest form? (a) No (b) Yes
  7. 7.Write 10/15 in its simplest form. =
  8. 8.Write 21/28 in its simplest form. =
  9. 9.What is the HCF of 4 and 10?
  10. 10.What is the HCF of 25 and 45?
  11. 11.Is 6/14 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 5 and 35?
  13. 13.What is the HCF of 32 and 40?
  14. 14.Write 7/63 in its simplest form. =
  15. 15.Write 6/18 in its simplest form. =
  16. 16.Write 4/8 in its simplest form. =
  17. 17.Write 15/24 in its simplest form. =
  18. 18.Write 49/56 in its simplest form. =
  19. 19.What is the HCF of 5 and 40?
  20. 20.What is the HCF of 16 and 40?
  21. 21.What is the HCF of 6 and 8?
  22. 22.Is 2/6 in its simplest form? (a) Yes (b) No
  23. 23.Write 9/90 in its simplest form. =
  24. 24.Write 18/48 in its simplest form. =
  25. 25.What is the HCF of 18 and 60?
  26. 26.Is 9/10 in its simplest form? (a) Yes (b) No
  27. 27.Write 9/45 in its simplest form. =
  28. 28.Is 5/8 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 7 and 28?
  30. 30.Is 3/27 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 10 and 15?
  32. 32.Is 3/4 in its simplest form? (a) No (b) Yes
  33. 33.Is 3/30 in its simplest form? (a) No (b) Yes
  34. 34.Write 40/45 in its simplest form. =
  35. 35.Is 7/9 in its simplest form? (a) Yes (b) No
  36. 36.Write 12/28 in its simplest form. =
  37. 37.What is the HCF of 2 and 4?
  38. 38.Is 3/21 in its simplest form? (a) No (b) Yes
  39. 39.Write 56/72 in its simplest form. =
  40. 40.Is 12/30 in its simplest form? (a) No (b) Yes

Answer key

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

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