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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 230 · 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 3/15 in its simplest form? (a) No (b) Yes
  2. 2.Write 12/20 in its simplest form. =
  3. 3.What is the HCF of 45 and 50?
  4. 4.Is 3/4 in its simplest form? (a) No (b) Yes
  5. 5.Is 3/24 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 16 and 18?
  7. 7.Write 6/27 in its simplest form. =
  8. 8.What is the HCF of 25 and 35?
  9. 9.Write 18/81 in its simplest form. =
  10. 10.Is 2/5 in its simplest form? (a) Yes (b) No
  11. 11.Write 8/72 in its simplest form. =
  12. 12.What is the HCF of 36 and 40?
  13. 13.Write 12/15 in its simplest form. =
  14. 14.Is 9/10 in its simplest form? (a) Yes (b) No
  15. 15.Write 63/90 in its simplest form. =
  16. 16.Write 6/60 in its simplest form. =
  17. 17.Write 32/40 in its simplest form. =
  18. 18.Write 9/15 in its simplest form. =
  19. 19.What is the HCF of 3 and 12?
  20. 20.Is 12/40 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 4 and 24?
  22. 22.What is the HCF of 12 and 54?
  23. 23.What is the HCF of 40 and 45?
  24. 24.Is 2/6 in its simplest form? (a) Yes (b) No
  25. 25.Is 2/3 in its simplest form? (a) Yes (b) No
  26. 26.Write 5/45 in its simplest form. =
  27. 27.Write 45/54 in its simplest form. =
  28. 28.What is the HCF of 15 and 21?
  29. 29.Write 21/49 in its simplest form. =
  30. 30.Is 30/48 in its simplest form? (a) Yes (b) No
  31. 31.Is 5/9 in its simplest form? (a) No (b) Yes
  32. 32.Write 10/15 in its simplest form. =
  33. 33.What is the HCF of 20 and 28?
  34. 34.What is the HCF of 14 and 35?
  35. 35.What is the HCF of 12 and 18?
  36. 36.Write 3/30 in its simplest form. =
  37. 37.Is 40/45 in its simplest form? (a) No (b) Yes
  38. 38.Write 27/90 in its simplest form. =
  39. 39.Is 7/8 in its simplest form? (a) Yes (b) No
  40. 40.Write 20/32 in its simplest form. =

Answer key

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

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