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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 382 · 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 1/5 in its simplest form? (a) No (b) Yes
  2. 2.Is 1/3 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 6 and 10?
  4. 4.Is 10/16 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 30 and 35?
  6. 6.Is 6/60 in its simplest form? (a) Yes (b) No
  7. 7.Is 1/8 in its simplest form? (a) No (b) Yes
  8. 8.Is 3/10 in its simplest form? (a) Yes (b) No
  9. 9.What is the HCF of 2 and 16?
  10. 10.Is 42/54 in its simplest form? (a) Yes (b) No
  11. 11.Is 12/40 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 3 and 15?
  13. 13.Write 2/18 in its simplest form. =
  14. 14.Is 5/8 in its simplest form? (a) Yes (b) No
  15. 15.What is the HCF of 6 and 8?
  16. 16.Is 12/20 in its simplest form? (a) No (b) Yes
  17. 17.Is 18/30 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 4 and 28?
  19. 19.What is the HCF of 10 and 14?
  20. 20.What is the HCF of 81 and 90?
  21. 21.What is the HCF of 16 and 28?
  22. 22.What is the HCF of 25 and 35?
  23. 23.Write 40/72 in its simplest form. =
  24. 24.Is 20/36 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 16 and 36?
  26. 26.Write 4/36 in its simplest form. =
  27. 27.Write 24/30 in its simplest form. =
  28. 28.Is 2/8 in its simplest form? (a) Yes (b) No
  29. 29.Is 7/10 in its simplest form? (a) No (b) Yes
  30. 30.Is 9/15 in its simplest form? (a) No (b) Yes
  31. 31.Write 15/18 in its simplest form. =
  32. 32.Is 3/7 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 9 and 63?
  34. 34.Write 6/60 in its simplest form. =
  35. 35.Write 18/81 in its simplest form. =
  36. 36.Is 24/27 in its simplest form? (a) Yes (b) No
  37. 37.Write 3/9 in its simplest form. =
  38. 38.What is the HCF of 35 and 63?
  39. 39.What is the HCF of 45 and 81?
  40. 40.What is the HCF of 32 and 40?

Answer key

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

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