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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 718 · 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 20/28 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 4 and 16?
  3. 3.What is the HCF of 18 and 42?
  4. 4.What is the HCF of 21 and 30?
  5. 5.Write 8/56 in its simplest form. =
  6. 6.Write 9/24 in its simplest form. =
  7. 7.Write 54/63 in its simplest form. =
  8. 8.Is 2/20 in its simplest form? (a) Yes (b) No
  9. 9.Is 24/27 in its simplest form? (a) No (b) Yes
  10. 10.Is 2/3 in its simplest form? (a) Yes (b) No
  11. 11.Write 7/14 in its simplest form. =
  12. 12.Is 3/15 in its simplest form? (a) No (b) Yes
  13. 13.Is 1/4 in its simplest form? (a) No (b) Yes
  14. 14.Write 2/14 in its simplest form. =
  15. 15.Write 40/56 in its simplest form. =
  16. 16.What is the HCF of 6 and 36?
  17. 17.What is the HCF of 9 and 30?
  18. 18.What is the HCF of 18 and 21?
  19. 19.Is 24/28 in its simplest form? (a) Yes (b) No
  20. 20.Write 12/21 in its simplest form. =
  21. 21.What is the HCF of 7 and 21?
  22. 22.Write 56/80 in its simplest form. =
  23. 23.Is 5/7 in its simplest form? (a) No (b) Yes
  24. 24.Write 18/60 in its simplest form. =
  25. 25.Write 2/12 in its simplest form. =
  26. 26.Is 6/8 in its simplest form? (a) No (b) Yes
  27. 27.Write 12/14 in its simplest form. =
  28. 28.Is 20/24 in its simplest form? (a) No (b) Yes
  29. 29.Is 9/24 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 36 and 42?
  31. 31.Write 16/24 in its simplest form. =
  32. 32.What is the HCF of 9 and 63?
  33. 33.Is 5/10 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 21 and 24?
  35. 35.Write 40/72 in its simplest form. =
  36. 36.Is 1/2 in its simplest form? (a) No (b) Yes
  37. 37.Is 1/6 in its simplest form? (a) No (b) Yes
  38. 38.Write 10/25 in its simplest form. =
  39. 39.Is 4/14 in its simplest form? (a) No (b) Yes
  40. 40.Is 4/9 in its simplest form? (a) Yes (b) No

Answer key

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

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