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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 600 · 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 2/3 in its simplest form? (a) Yes (b) No
  2. 2.Write 4/18 in its simplest form. =
  3. 3.Is 7/8 in its simplest form? (a) No (b) Yes
  4. 4.Is 1/5 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 10 and 12?
  6. 6.What is the HCF of 40 and 64?
  7. 7.Write 4/14 in its simplest form. =
  8. 8.Is 6/30 in its simplest form? (a) Yes (b) No
  9. 9.Is 3/12 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 45 and 63?
  11. 11.Is 10/25 in its simplest form? (a) Yes (b) No
  12. 12.Is 4/9 in its simplest form? (a) No (b) Yes
  13. 13.Is 8/36 in its simplest form? (a) Yes (b) No
  14. 14.Write 45/72 in its simplest form. =
  15. 15.Write 9/63 in its simplest form. =
  16. 16.Write 21/49 in its simplest form. =
  17. 17.What is the HCF of 12 and 32?
  18. 18.What is the HCF of 8 and 72?
  19. 19.Write 5/10 in its simplest form. =
  20. 20.Write 7/21 in its simplest form. =
  21. 21.Is 12/30 in its simplest form? (a) No (b) Yes
  22. 22.What is the HCF of 42 and 48?
  23. 23.What is the HCF of 40 and 72?
  24. 24.What is the HCF of 36 and 63?
  25. 25.What is the HCF of 28 and 49?
  26. 26.What is the HCF of 42 and 60?
  27. 27.Write 16/24 in its simplest form. =
  28. 28.Is 3/4 in its simplest form? (a) Yes (b) No
  29. 29.Is 2/16 in its simplest form? (a) Yes (b) No
  30. 30.Is 6/14 in its simplest form? (a) Yes (b) No
  31. 31.Write 12/20 in its simplest form. =
  32. 32.Is 14/18 in its simplest form? (a) Yes (b) No
  33. 33.Is 5/10 in its simplest form? (a) No (b) Yes
  34. 34.Write 9/72 in its simplest form. =
  35. 35.What is the HCF of 45 and 72?
  36. 36.Write 21/70 in its simplest form. =
  37. 37.Write 6/9 in its simplest form. =
  38. 38.What is the HCF of 14 and 18?
  39. 39.Write 7/63 in its simplest form. =
  40. 40.Write 10/45 in its simplest form. =

Answer key

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

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