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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 554 · 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 20/24 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 3 and 15?
  3. 3.Is 3/10 in its simplest form? (a) No (b) Yes
  4. 4.Is 1/9 in its simplest form? (a) No (b) Yes
  5. 5.Is 5/9 in its simplest form? (a) No (b) Yes
  6. 6.Write 6/12 in its simplest form. =
  7. 7.Write 4/28 in its simplest form. =
  8. 8.What is the HCF of 6 and 14?
  9. 9.What is the HCF of 7 and 35?
  10. 10.What is the HCF of 16 and 20?
  11. 11.Write 5/20 in its simplest form. =
  12. 12.What is the HCF of 30 and 54?
  13. 13.What is the HCF of 21 and 28?
  14. 14.Is 6/18 in its simplest form? (a) No (b) Yes
  15. 15.Is 15/25 in its simplest form? (a) No (b) Yes
  16. 16.Write 12/27 in its simplest form. =
  17. 17.Is 1/3 in its simplest form? (a) Yes (b) No
  18. 18.Is 1/5 in its simplest form? (a) No (b) Yes
  19. 19.Is 6/12 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 16 and 72?
  21. 21.Write 28/49 in its simplest form. =
  22. 22.Write 42/48 in its simplest form. =
  23. 23.What is the HCF of 5 and 45?
  24. 24.Write 15/35 in its simplest form. =
  25. 25.What is the HCF of 9 and 90?
  26. 26.Is 42/60 in its simplest form? (a) Yes (b) No
  27. 27.Write 21/56 in its simplest form. =
  28. 28.What is the HCF of 2 and 14?
  29. 29.Write 16/28 in its simplest form. =
  30. 30.Is 6/54 in its simplest form? (a) No (b) Yes
  31. 31.Write 30/48 in its simplest form. =
  32. 32.Write 9/15 in its simplest form. =
  33. 33.Write 8/16 in its simplest form. =
  34. 34.Write 25/35 in its simplest form. =
  35. 35.What is the HCF of 40 and 48?
  36. 36.Write 42/60 in its simplest form. =
  37. 37.What is the HCF of 20 and 25?
  38. 38.What is the HCF of 2 and 20?
  39. 39.Is 3/8 in its simplest form? (a) Yes (b) No
  40. 40.Write 3/18 in its simplest form. =

Answer key

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

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