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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 925 · 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 40/45 in its simplest form. =
  2. 2.Is 15/27 in its simplest form? (a) Yes (b) No
  3. 3.Write 40/48 in its simplest form. =
  4. 4.Is 1/3 in its simplest form? (a) Yes (b) No
  5. 5.Is 1/4 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 15 and 25?
  7. 7.Is 1/9 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 9 and 21?
  9. 9.Write 5/15 in its simplest form. =
  10. 10.What is the HCF of 18 and 24?
  11. 11.Is 1/10 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 49 and 63?
  13. 13.Write 5/35 in its simplest form. =
  14. 14.What is the HCF of 9 and 12?
  15. 15.Write 16/18 in its simplest form. =
  16. 16.Write 7/14 in its simplest form. =
  17. 17.Is 3/8 in its simplest form? (a) No (b) Yes
  18. 18.Write 9/27 in its simplest form. =
  19. 19.Write 6/36 in its simplest form. =
  20. 20.Write 5/30 in its simplest form. =
  21. 21.Write 9/15 in its simplest form. =
  22. 22.What is the HCF of 14 and 35?
  23. 23.Write 20/36 in its simplest form. =
  24. 24.Is 2/3 in its simplest form? (a) No (b) Yes
  25. 25.Is 1/5 in its simplest form? (a) No (b) Yes
  26. 26.Is 7/8 in its simplest form? (a) Yes (b) No
  27. 27.Is 9/15 in its simplest form? (a) No (b) Yes
  28. 28.Is 9/21 in its simplest form? (a) No (b) Yes
  29. 29.Write 16/28 in its simplest form. =
  30. 30.What is the HCF of 27 and 36?
  31. 31.What is the HCF of 56 and 63?
  32. 32.Write 6/14 in its simplest form. =
  33. 33.Write 2/10 in its simplest form. =
  34. 34.Write 10/25 in its simplest form. =
  35. 35.What is the HCF of 15 and 50?
  36. 36.What is the HCF of 63 and 72?
  37. 37.Write 21/49 in its simplest form. =
  38. 38.Is 3/10 in its simplest form? (a) No (b) Yes
  39. 39.Is 4/9 in its simplest form? (a) Yes (b) No
  40. 40.Write 12/27 in its simplest form. =

Answer key

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

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