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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 410 · 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 9/12 in its simplest form? (a) No (b) Yes
  2. 2.Is 7/10 in its simplest form? (a) No (b) Yes
  3. 3.Write 48/56 in its simplest form. =
  4. 4.What is the HCF of 3 and 21?
  5. 5.What is the HCF of 10 and 25?
  6. 6.Write 3/24 in its simplest form. =
  7. 7.Write 12/14 in its simplest form. =
  8. 8.What is the HCF of 5 and 45?
  9. 9.What is the HCF of 6 and 15?
  10. 10.What is the HCF of 35 and 56?
  11. 11.Write 2/20 in its simplest form. =
  12. 12.Write 45/81 in its simplest form. =
  13. 13.Write 12/30 in its simplest form. =
  14. 14.What is the HCF of 12 and 21?
  15. 15.Write 42/48 in its simplest form. =
  16. 16.Write 56/64 in its simplest form. =
  17. 17.Is 9/21 in its simplest form? (a) No (b) Yes
  18. 18.Write 9/12 in its simplest form. =
  19. 19.Is 3/5 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 18 and 27?
  21. 21.Write 3/21 in its simplest form. =
  22. 22.Is 4/18 in its simplest form? (a) No (b) Yes
  23. 23.Is 4/36 in its simplest form? (a) Yes (b) No
  24. 24.Write 8/20 in its simplest form. =
  25. 25.Write 42/54 in its simplest form. =
  26. 26.Write 12/20 in its simplest form. =
  27. 27.Is 6/8 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 25 and 30?
  29. 29.Is 7/9 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 3 and 24?
  31. 31.Write 7/21 in its simplest form. =
  32. 32.What is the HCF of 4 and 10?
  33. 33.Is 1/5 in its simplest form? (a) No (b) Yes
  34. 34.Write 7/49 in its simplest form. =
  35. 35.Write 28/32 in its simplest form. =
  36. 36.Is 20/25 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 9 and 15?
  38. 38.Is 6/12 in its simplest form? (a) Yes (b) No
  39. 39.Is 10/16 in its simplest form? (a) Yes (b) No
  40. 40.Write 15/21 in its simplest form. =

Answer key

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

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