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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 454 · 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 4/36 in its simplest form. =
  2. 2.Write 2/18 in its simplest form. =
  3. 3.Write 42/49 in its simplest form. =
  4. 4.What is the HCF of 4 and 18?
  5. 5.Write 4/28 in its simplest form. =
  6. 6.What is the HCF of 14 and 18?
  7. 7.Write 40/45 in its simplest form. =
  8. 8.What is the HCF of 25 and 45?
  9. 9.What is the HCF of 16 and 18?
  10. 10.Write 27/30 in its simplest form. =
  11. 11.What is the HCF of 4 and 8?
  12. 12.Is 15/18 in its simplest form? (a) No (b) Yes
  13. 13.Is 1/7 in its simplest form? (a) Yes (b) No
  14. 14.Is 32/36 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 6 and 14?
  16. 16.Write 63/90 in its simplest form. =
  17. 17.Is 2/9 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 3 and 15?
  19. 19.Write 25/35 in its simplest form. =
  20. 20.What is the HCF of 12 and 54?
  21. 21.Write 21/35 in its simplest form. =
  22. 22.What is the HCF of 8 and 80?
  23. 23.What is the HCF of 45 and 72?
  24. 24.Is 3/5 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 35 and 50?
  26. 26.Is 21/30 in its simplest form? (a) Yes (b) No
  27. 27.Write 18/27 in its simplest form. =
  28. 28.Is 2/8 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 42 and 49?
  30. 30.What is the HCF of 24 and 28?
  31. 31.Write 12/28 in its simplest form. =
  32. 32.What is the HCF of 3 and 27?
  33. 33.Write 3/9 in its simplest form. =
  34. 34.Is 1/8 in its simplest form? (a) Yes (b) No
  35. 35.Is 9/10 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 15 and 18?
  37. 37.Is 15/27 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 15 and 25?
  39. 39.Write 72/81 in its simplest form. =
  40. 40.Write 8/12 in its simplest form. =

Answer key

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

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