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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 916 · 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.What is the HCF of 14 and 18?
  2. 2.Write 21/35 in its simplest form. =
  3. 3.What is the HCF of 2 and 6?
  4. 4.What is the HCF of 9 and 90?
  5. 5.What is the HCF of 28 and 49?
  6. 6.Write 7/14 in its simplest form. =
  7. 7.Is 2/20 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 54 and 63?
  9. 9.Write 5/10 in its simplest form. =
  10. 10.Write 4/16 in its simplest form. =
  11. 11.What is the HCF of 45 and 81?
  12. 12.What is the HCF of 27 and 72?
  13. 13.What is the HCF of 14 and 21?
  14. 14.Write 3/24 in its simplest form. =
  15. 15.What is the HCF of 15 and 18?
  16. 16.Write 18/45 in its simplest form. =
  17. 17.Write 14/21 in its simplest form. =
  18. 18.Is 10/45 in its simplest form? (a) No (b) Yes
  19. 19.Is 12/40 in its simplest form? (a) No (b) Yes
  20. 20.Write 6/8 in its simplest form. =
  21. 21.Write 3/12 in its simplest form. =
  22. 22.Is 7/10 in its simplest form? (a) Yes (b) No
  23. 23.Is 12/20 in its simplest form? (a) No (b) Yes
  24. 24.Is 14/18 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 8 and 20?
  26. 26.Is 3/7 in its simplest form? (a) Yes (b) No
  27. 27.Write 4/12 in its simplest form. =
  28. 28.What is the HCF of 3 and 18?
  29. 29.Write 2/18 in its simplest form. =
  30. 30.Write 6/15 in its simplest form. =
  31. 31.Write 12/18 in its simplest form. =
  32. 32.Write 45/72 in its simplest form. =
  33. 33.Write 8/36 in its simplest form. =
  34. 34.Is 1/7 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 6 and 12?
  36. 36.Write 20/28 in its simplest form. =
  37. 37.What is the HCF of 40 and 64?
  38. 38.Write 4/6 in its simplest form. =
  39. 39.Write 49/70 in its simplest form. =
  40. 40.Is 5/30 in its simplest form? (a) No (b) Yes

Answer key

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

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