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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 545 · 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 4/20 in its simplest form? (a) Yes (b) No
  2. 2.Write 5/25 in its simplest form. =
  3. 3.What is the HCF of 6 and 42?
  4. 4.Write 40/45 in its simplest form. =
  5. 5.Write 40/72 in its simplest form. =
  6. 6.Is 28/40 in its simplest form? (a) No (b) Yes
  7. 7.Is 10/25 in its simplest form? (a) No (b) Yes
  8. 8.Is 3/15 in its simplest form? (a) No (b) Yes
  9. 9.Is 15/40 in its simplest form? (a) No (b) Yes
  10. 10.Write 9/36 in its simplest form. =
  11. 11.Write 5/35 in its simplest form. =
  12. 12.Is 30/42 in its simplest form? (a) Yes (b) No
  13. 13.Write 40/56 in its simplest form. =
  14. 14.Is 10/16 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 2 and 8?
  16. 16.Write 3/9 in its simplest form. =
  17. 17.What is the HCF of 4 and 16?
  18. 18.Is 8/20 in its simplest form? (a) Yes (b) No
  19. 19.Write 16/36 in its simplest form. =
  20. 20.What is the HCF of 6 and 54?
  21. 21.Is 1/3 in its simplest form? (a) No (b) Yes
  22. 22.Is 1/7 in its simplest form? (a) Yes (b) No
  23. 23.Write 27/45 in its simplest form. =
  24. 24.Write 3/18 in its simplest form. =
  25. 25.Write 2/10 in its simplest form. =
  26. 26.Write 4/8 in its simplest form. =
  27. 27.Write 20/32 in its simplest form. =
  28. 28.What is the HCF of 15 and 21?
  29. 29.Is 4/16 in its simplest form? (a) No (b) Yes
  30. 30.Is 1/4 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 16 and 18?
  32. 32.What is the HCF of 12 and 27?
  33. 33.Is 10/12 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 8 and 40?
  35. 35.Is 42/48 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 20 and 32?
  37. 37.What is the HCF of 6 and 16?
  38. 38.Is 4/10 in its simplest form? (a) Yes (b) No
  39. 39.Write 45/50 in its simplest form. =
  40. 40.Write 5/10 in its simplest form. =

Answer key

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

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