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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 892 · 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 2/3 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 15 and 25?
  3. 3.Is 1/4 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 18 and 45?
  5. 5.Write 4/6 in its simplest form. =
  6. 6.What is the HCF of 9 and 15?
  7. 7.What is the HCF of 12 and 21?
  8. 8.Is 5/9 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 15 and 50?
  10. 10.Write 18/81 in its simplest form. =
  11. 11.What is the HCF of 8 and 14?
  12. 12.What is the HCF of 63 and 90?
  13. 13.Is 4/5 in its simplest form? (a) No (b) Yes
  14. 14.Write 35/56 in its simplest form. =
  15. 15.Write 6/27 in its simplest form. =
  16. 16.What is the HCF of 3 and 21?
  17. 17.Write 12/18 in its simplest form. =
  18. 18.Is 10/15 in its simplest form? (a) No (b) Yes
  19. 19.Write 7/70 in its simplest form. =
  20. 20.What is the HCF of 10 and 35?
  21. 21.What is the HCF of 10 and 16?
  22. 22.Is 2/9 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 3 and 12?
  24. 24.Is 6/12 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 8 and 32?
  26. 26.Write 20/35 in its simplest form. =
  27. 27.Write 18/20 in its simplest form. =
  28. 28.What is the HCF of 3 and 9?
  29. 29.Is 1/5 in its simplest form? (a) Yes (b) No
  30. 30.Is 3/15 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 9 and 12?
  32. 32.Is 3/8 in its simplest form? (a) No (b) Yes
  33. 33.Is 15/18 in its simplest form? (a) Yes (b) No
  34. 34.Is 3/10 in its simplest form? (a) No (b) Yes
  35. 35.Is 5/15 in its simplest form? (a) Yes (b) No
  36. 36.Write 27/36 in its simplest form. =
  37. 37.Is 1/9 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 56 and 64?
  39. 39.What is the HCF of 63 and 70?
  40. 40.Is 5/7 in its simplest form? (a) No (b) Yes

Answer key

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

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