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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 366 · 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) No (b) Yes
  2. 2.What is the HCF of 15 and 21?
  3. 3.Is 2/3 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 9 and 36?
  5. 5.Write 12/30 in its simplest form. =
  6. 6.Is 2/7 in its simplest form? (a) Yes (b) No
  7. 7.Is 35/40 in its simplest form? (a) No (b) Yes
  8. 8.Write 8/56 in its simplest form. =
  9. 9.What is the HCF of 12 and 28?
  10. 10.What is the HCF of 9 and 81?
  11. 11.What is the HCF of 4 and 10?
  12. 12.Write 24/40 in its simplest form. =
  13. 13.Write 36/45 in its simplest form. =
  14. 14.What is the HCF of 3 and 30?
  15. 15.Is 5/9 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 9 and 63?
  17. 17.Write 49/63 in its simplest form. =
  18. 18.Is 3/18 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 8 and 40?
  20. 20.What is the HCF of 10 and 25?
  21. 21.Is 1/6 in its simplest form? (a) No (b) Yes
  22. 22.Is 6/14 in its simplest form? (a) No (b) Yes
  23. 23.Write 5/15 in its simplest form. =
  24. 24.What is the HCF of 10 and 45?
  25. 25.Write 9/15 in its simplest form. =
  26. 26.Write 3/6 in its simplest form. =
  27. 27.Is 1/3 in its simplest form? (a) No (b) Yes
  28. 28.Is 7/8 in its simplest form? (a) Yes (b) No
  29. 29.Is 5/7 in its simplest form? (a) Yes (b) No
  30. 30.Is 3/30 in its simplest form? (a) Yes (b) No
  31. 31.Is 10/18 in its simplest form? (a) No (b) Yes
  32. 32.Write 45/54 in its simplest form. =
  33. 33.Is 1/8 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 20 and 25?
  35. 35.Write 9/27 in its simplest form. =
  36. 36.Write 49/56 in its simplest form. =
  37. 37.Write 5/25 in its simplest form. =
  38. 38.Is 15/35 in its simplest form? (a) No (b) Yes
  39. 39.What is the HCF of 6 and 30?
  40. 40.What is the HCF of 21 and 28?

Answer key

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

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