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Simplest Form Fractions Worksheet

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

Answer key

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

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