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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 387 · 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 15/40 in its simplest form? (a) No (b) Yes
  2. 2.Write 24/28 in its simplest form. =
  3. 3.Is 6/27 in its simplest form? (a) No (b) Yes
  4. 4.Write 42/48 in its simplest form. =
  5. 5.Write 7/21 in its simplest form. =
  6. 6.Is 2/10 in its simplest form? (a) No (b) Yes
  7. 7.Write 48/54 in its simplest form. =
  8. 8.What is the HCF of 28 and 40?
  9. 9.What is the HCF of 6 and 20?
  10. 10.What is the HCF of 2 and 4?
  11. 11.Write 32/40 in its simplest form. =
  12. 12.Is 6/7 in its simplest form? (a) No (b) Yes
  13. 13.Write 18/27 in its simplest form. =
  14. 14.What is the HCF of 45 and 72?
  15. 15.Is 7/10 in its simplest form? (a) No (b) Yes
  16. 16.Is 2/5 in its simplest form? (a) No (b) Yes
  17. 17.Is 3/4 in its simplest form? (a) No (b) Yes
  18. 18.Is 6/21 in its simplest form? (a) Yes (b) No
  19. 19.Write 12/21 in its simplest form. =
  20. 20.Is 5/6 in its simplest form? (a) No (b) Yes
  21. 21.Write 4/24 in its simplest form. =
  22. 22.Is 1/2 in its simplest form? (a) No (b) Yes
  23. 23.Write 4/36 in its simplest form. =
  24. 24.What is the HCF of 21 and 24?
  25. 25.Is 16/20 in its simplest form? (a) No (b) Yes
  26. 26.Write 2/4 in its simplest form. =
  27. 27.What is the HCF of 6 and 18?
  28. 28.Is 1/6 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 18 and 21?
  30. 30.Write 21/70 in its simplest form. =
  31. 31.What is the HCF of 32 and 36?
  32. 32.Write 4/18 in its simplest form. =
  33. 33.What is the HCF of 15 and 20?
  34. 34.Write 28/40 in its simplest form. =
  35. 35.Write 12/27 in its simplest form. =
  36. 36.What is the HCF of 7 and 21?
  37. 37.Write 6/24 in its simplest form. =
  38. 38.Write 8/36 in its simplest form. =
  39. 39.What is the HCF of 18 and 60?
  40. 40.Write 10/16 in its simplest form. =

Answer key

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

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