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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 906 · 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.What is the HCF of 6 and 60?
  2. 2.What is the HCF of 72 and 81?
  3. 3.Is 2/20 in its simplest form? (a) No (b) Yes
  4. 4.Write 45/81 in its simplest form. =
  5. 5.Is 18/48 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 49 and 70?
  7. 7.Write 24/64 in its simplest form. =
  8. 8.Is 8/12 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 18 and 21?
  10. 10.Write 12/18 in its simplest form. =
  11. 11.What is the HCF of 40 and 72?
  12. 12.Write 8/18 in its simplest form. =
  13. 13.What is the HCF of 54 and 63?
  14. 14.Is 7/10 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 14 and 21?
  16. 16.Write 30/42 in its simplest form. =
  17. 17.Is 28/36 in its simplest form? (a) Yes (b) No
  18. 18.Write 6/27 in its simplest form. =
  19. 19.Write 63/70 in its simplest form. =
  20. 20.Write 2/18 in its simplest form. =
  21. 21.Write 35/50 in its simplest form. =
  22. 22.Is 2/6 in its simplest form? (a) No (b) Yes
  23. 23.Write 7/21 in its simplest form. =
  24. 24.What is the HCF of 35 and 56?
  25. 25.Is 7/9 in its simplest form? (a) Yes (b) No
  26. 26.Write 8/24 in its simplest form. =
  27. 27.What is the HCF of 9 and 36?
  28. 28.Write 6/8 in its simplest form. =
  29. 29.Write 25/35 in its simplest form. =
  30. 30.Write 4/36 in its simplest form. =
  31. 31.What is the HCF of 2 and 16?
  32. 32.Is 2/3 in its simplest form? (a) No (b) Yes
  33. 33.Write 12/27 in its simplest form. =
  34. 34.What is the HCF of 21 and 70?
  35. 35.What is the HCF of 6 and 21?
  36. 36.What is the HCF of 3 and 15?
  37. 37.Is 5/8 in its simplest form? (a) No (b) Yes
  38. 38.Is 1/5 in its simplest form? (a) No (b) Yes
  39. 39.Write 10/18 in its simplest form. =
  40. 40.Is 4/5 in its simplest form? (a) No (b) Yes

Answer key

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

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