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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 209 · 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 1/3 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 64 and 72?
  3. 3.What is the HCF of 14 and 21?
  4. 4.Write 56/72 in its simplest form. =
  5. 5.Is 5/9 in its simplest form? (a) Yes (b) No
  6. 6.Write 6/24 in its simplest form. =
  7. 7.What is the HCF of 12 and 15?
  8. 8.Is 15/21 in its simplest form? (a) No (b) Yes
  9. 9.Write 20/25 in its simplest form. =
  10. 10.Is 4/40 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 4 and 14?
  12. 12.Is 6/8 in its simplest form? (a) No (b) Yes
  13. 13.Write 10/16 in its simplest form. =
  14. 14.What is the HCF of 4 and 16?
  15. 15.What is the HCF of 8 and 40?
  16. 16.Write 36/42 in its simplest form. =
  17. 17.What is the HCF of 8 and 32?
  18. 18.Write 2/14 in its simplest form. =
  19. 19.What is the HCF of 21 and 35?
  20. 20.Is 1/2 in its simplest form? (a) No (b) Yes
  21. 21.Write 35/42 in its simplest form. =
  22. 22.Is 4/6 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 54 and 63?
  24. 24.What is the HCF of 21 and 24?
  25. 25.Write 63/90 in its simplest form. =
  26. 26.Write 9/72 in its simplest form. =
  27. 27.Write 63/72 in its simplest form. =
  28. 28.Is 3/8 in its simplest form? (a) Yes (b) No
  29. 29.Is 15/35 in its simplest form? (a) No (b) Yes
  30. 30.Is 2/5 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 36 and 42?
  32. 32.What is the HCF of 5 and 15?
  33. 33.Is 3/7 in its simplest form? (a) No (b) Yes
  34. 34.Write 14/21 in its simplest form. =
  35. 35.What is the HCF of 24 and 56?
  36. 36.Write 8/10 in its simplest form. =
  37. 37.What is the HCF of 21 and 49?
  38. 38.Is 2/4 in its simplest form? (a) No (b) Yes
  39. 39.Write 10/15 in its simplest form. =
  40. 40.Write 3/12 in its simplest form. =

Answer key

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

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