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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 779 · 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 21 and 28?
  2. 2.Is 2/3 in its simplest form? (a) Yes (b) No
  3. 3.Is 18/48 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 6 and 9?
  5. 5.Write 4/36 in its simplest form. =
  6. 6.Is 1/10 in its simplest form? (a) Yes (b) No
  7. 7.Is 12/30 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 14 and 63?
  9. 9.What is the HCF of 15 and 21?
  10. 10.What is the HCF of 20 and 35?
  11. 11.Write 9/36 in its simplest form. =
  12. 12.What is the HCF of 36 and 81?
  13. 13.What is the HCF of 45 and 81?
  14. 14.Is 48/54 in its simplest form? (a) Yes (b) No
  15. 15.Is 40/45 in its simplest form? (a) No (b) Yes
  16. 16.Write 25/30 in its simplest form. =
  17. 17.Write 25/35 in its simplest form. =
  18. 18.Write 18/20 in its simplest form. =
  19. 19.Is 3/7 in its simplest form? (a) No (b) Yes
  20. 20.Write 9/18 in its simplest form. =
  21. 21.What is the HCF of 4 and 10?
  22. 22.Write 72/80 in its simplest form. =
  23. 23.Is 2/14 in its simplest form? (a) No (b) Yes
  24. 24.Write 25/45 in its simplest form. =
  25. 25.What is the HCF of 9 and 12?
  26. 26.Is 1/2 in its simplest form? (a) No (b) Yes
  27. 27.Is 6/12 in its simplest form? (a) No (b) Yes
  28. 28.Write 3/12 in its simplest form. =
  29. 29.Write 15/24 in its simplest form. =
  30. 30.Is 5/7 in its simplest form? (a) Yes (b) No
  31. 31.Write 3/18 in its simplest form. =
  32. 32.Is 12/18 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 8 and 10?
  34. 34.Is 25/30 in its simplest form? (a) No (b) Yes
  35. 35.Is 9/10 in its simplest form? (a) Yes (b) No
  36. 36.Write 10/25 in its simplest form. =
  37. 37.Write 18/21 in its simplest form. =
  38. 38.Is 16/18 in its simplest form? (a) Yes (b) No
  39. 39.Write 20/35 in its simplest form. =
  40. 40.What is the HCF of 42 and 60?

Answer key

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

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