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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 485 · 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 3/18 in its simplest form. =
  2. 2.Write 18/27 in its simplest form. =
  3. 3.What is the HCF of 8 and 12?
  4. 4.Write 25/45 in its simplest form. =
  5. 5.What is the HCF of 36 and 40?
  6. 6.Write 4/24 in its simplest form. =
  7. 7.Is 3/5 in its simplest form? (a) No (b) Yes
  8. 8.Is 3/15 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 45 and 50?
  10. 10.What is the HCF of 35 and 40?
  11. 11.What is the HCF of 3 and 18?
  12. 12.Write 16/20 in its simplest form. =
  13. 13.Is 12/20 in its simplest form? (a) Yes (b) No
  14. 14.Is 24/28 in its simplest form? (a) No (b) Yes
  15. 15.Is 8/28 in its simplest form? (a) No (b) Yes
  16. 16.Write 28/49 in its simplest form. =
  17. 17.Write 18/21 in its simplest form. =
  18. 18.Is 15/27 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 5 and 50?
  20. 20.Is 2/8 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 6 and 24?
  22. 22.What is the HCF of 6 and 14?
  23. 23.Is 9/10 in its simplest form? (a) No (b) Yes
  24. 24.Is 1/4 in its simplest form? (a) No (b) Yes
  25. 25.Write 9/12 in its simplest form. =
  26. 26.Is 6/21 in its simplest form? (a) Yes (b) No
  27. 27.Write 3/30 in its simplest form. =
  28. 28.What is the HCF of 24 and 54?
  29. 29.Write 10/25 in its simplest form. =
  30. 30.Is 6/24 in its simplest form? (a) Yes (b) No
  31. 31.Write 32/72 in its simplest form. =
  32. 32.What is the HCF of 7 and 35?
  33. 33.Is 20/32 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 9 and 21?
  35. 35.Write 6/60 in its simplest form. =
  36. 36.Is 6/14 in its simplest form? (a) Yes (b) No
  37. 37.Write 63/81 in its simplest form. =
  38. 38.What is the HCF of 3 and 9?
  39. 39.Write 9/45 in its simplest form. =
  40. 40.Write 56/80 in its simplest form. =

Answer key

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

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