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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 495 · 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 36/42 in its simplest form? (a) Yes (b) No
  2. 2.Is 20/45 in its simplest form? (a) No (b) Yes
  3. 3.Write 12/40 in its simplest form. =
  4. 4.What is the HCF of 16 and 28?
  5. 5.Is 7/10 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 6 and 15?
  7. 7.Write 4/36 in its simplest form. =
  8. 8.Write 28/49 in its simplest form. =
  9. 9.Is 5/7 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 4 and 10?
  11. 11.What is the HCF of 20 and 45?
  12. 12.Write 4/18 in its simplest form. =
  13. 13.What is the HCF of 12 and 18?
  14. 14.Is 1/7 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 2 and 4?
  16. 16.Write 32/40 in its simplest form. =
  17. 17.Write 72/81 in its simplest form. =
  18. 18.What is the HCF of 12 and 27?
  19. 19.Write 18/24 in its simplest form. =
  20. 20.What is the HCF of 10 and 16?
  21. 21.What is the HCF of 5 and 15?
  22. 22.Is 1/4 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 2 and 14?
  24. 24.Is 12/20 in its simplest form? (a) Yes (b) No
  25. 25.Write 15/18 in its simplest form. =
  26. 26.What is the HCF of 2 and 10?
  27. 27.What is the HCF of 6 and 14?
  28. 28.Write 27/45 in its simplest form. =
  29. 29.What is the HCF of 35 and 45?
  30. 30.Is 8/20 in its simplest form? (a) No (b) Yes
  31. 31.Is 2/3 in its simplest form? (a) Yes (b) No
  32. 32.Is 2/9 in its simplest form? (a) Yes (b) No
  33. 33.Write 27/30 in its simplest form. =
  34. 34.What is the HCF of 18 and 24?
  35. 35.What is the HCF of 30 and 35?
  36. 36.What is the HCF of 32 and 36?
  37. 37.Write 21/28 in its simplest form. =
  38. 38.Is 2/16 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 56 and 80?
  40. 40.What is the HCF of 15 and 27?

Answer key

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

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