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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 678 · 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 36/42 in its simplest form. =
  2. 2.Write 5/45 in its simplest form. =
  3. 3.Is 3/5 in its simplest form? (a) No (b) Yes
  4. 4.Is 16/36 in its simplest form? (a) No (b) Yes
  5. 5.Write 8/20 in its simplest form. =
  6. 6.Is 10/35 in its simplest form? (a) No (b) Yes
  7. 7.Is 1/3 in its simplest form? (a) No (b) Yes
  8. 8.Write 48/54 in its simplest form. =
  9. 9.Write 6/20 in its simplest form. =
  10. 10.Write 25/45 in its simplest form. =
  11. 11.What is the HCF of 6 and 54?
  12. 12.Write 45/63 in its simplest form. =
  13. 13.Is 5/45 in its simplest form? (a) No (b) Yes
  14. 14.Is 5/7 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 12 and 54?
  16. 16.What is the HCF of 4 and 10?
  17. 17.Write 10/12 in its simplest form. =
  18. 18.Write 36/81 in its simplest form. =
  19. 19.Write 8/18 in its simplest form. =
  20. 20.Write 9/90 in its simplest form. =
  21. 21.Is 3/4 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 18 and 21?
  23. 23.Is 3/12 in its simplest form? (a) No (b) Yes
  24. 24.Write 10/25 in its simplest form. =
  25. 25.Write 5/35 in its simplest form. =
  26. 26.Is 12/15 in its simplest form? (a) No (b) Yes
  27. 27.Is 15/40 in its simplest form? (a) No (b) Yes
  28. 28.Write 25/40 in its simplest form. =
  29. 29.Is 40/45 in its simplest form? (a) No (b) Yes
  30. 30.Is 4/5 in its simplest form? (a) No (b) Yes
  31. 31.Is 5/6 in its simplest form? (a) No (b) Yes
  32. 32.Is 5/20 in its simplest form? (a) No (b) Yes
  33. 33.Is 20/45 in its simplest form? (a) No (b) Yes
  34. 34.Write 15/20 in its simplest form. =
  35. 35.What is the HCF of 5 and 25?
  36. 36.Write 18/24 in its simplest form. =
  37. 37.Write 6/27 in its simplest form. =
  38. 38.Write 12/27 in its simplest form. =
  39. 39.What is the HCF of 45 and 63?
  40. 40.Write 36/63 in its simplest form. =

Answer key

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

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