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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 360 · 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.Write 4/12 in its simplest form. =
  2. 2.Is 6/9 in its simplest form? (a) No (b) Yes
  3. 3.Is 20/25 in its simplest form? (a) No (b) Yes
  4. 4.Write 10/45 in its simplest form. =
  5. 5.Write 6/48 in its simplest form. =
  6. 6.Is 2/5 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 8 and 16?
  8. 8.Is 6/7 in its simplest form? (a) No (b) Yes
  9. 9.Is 28/40 in its simplest form? (a) Yes (b) No
  10. 10.Write 42/54 in its simplest form. =
  11. 11.Write 14/21 in its simplest form. =
  12. 12.What is the HCF of 12 and 16?
  13. 13.Is 15/50 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 14 and 18?
  15. 15.What is the HCF of 24 and 27?
  16. 16.What is the HCF of 9 and 12?
  17. 17.What is the HCF of 3 and 18?
  18. 18.Write 18/48 in its simplest form. =
  19. 19.Write 4/24 in its simplest form. =
  20. 20.Is 10/16 in its simplest form? (a) Yes (b) No
  21. 21.Write 2/10 in its simplest form. =
  22. 22.Write 4/20 in its simplest form. =
  23. 23.Write 9/18 in its simplest form. =
  24. 24.What is the HCF of 36 and 42?
  25. 25.Is 25/30 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 9 and 81?
  27. 27.What is the HCF of 6 and 15?
  28. 28.Is 30/48 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 32 and 40?
  30. 30.Write 4/18 in its simplest form. =
  31. 31.Is 1/6 in its simplest form? (a) No (b) Yes
  32. 32.Is 24/42 in its simplest form? (a) No (b) Yes
  33. 33.Is 48/54 in its simplest form? (a) No (b) Yes
  34. 34.Write 4/32 in its simplest form. =
  35. 35.Write 5/15 in its simplest form. =
  36. 36.Write 7/70 in its simplest form. =
  37. 37.Is 6/42 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 45 and 72?
  39. 39.What is the HCF of 10 and 12?
  40. 40.Write 21/49 in its simplest form. =

Answer key

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

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