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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 215 · 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 20/25 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 48 and 54?
  3. 3.Write 32/56 in its simplest form. =
  4. 4.What is the HCF of 35 and 42?
  5. 5.Write 36/81 in its simplest form. =
  6. 6.Write 8/14 in its simplest form. =
  7. 7.Is 35/50 in its simplest form? (a) No (b) Yes
  8. 8.Write 8/10 in its simplest form. =
  9. 9.What is the HCF of 35 and 49?
  10. 10.What is the HCF of 25 and 45?
  11. 11.What is the HCF of 4 and 28?
  12. 12.Is 2/14 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 5 and 40?
  14. 14.What is the HCF of 20 and 36?
  15. 15.What is the HCF of 15 and 21?
  16. 16.What is the HCF of 45 and 81?
  17. 17.Write 9/21 in its simplest form. =
  18. 18.What is the HCF of 15 and 20?
  19. 19.Write 15/27 in its simplest form. =
  20. 20.Is 2/5 in its simplest form? (a) No (b) Yes
  21. 21.Write 30/36 in its simplest form. =
  22. 22.Is 27/30 in its simplest form? (a) No (b) Yes
  23. 23.Is 12/16 in its simplest form? (a) No (b) Yes
  24. 24.Write 9/27 in its simplest form. =
  25. 25.Write 16/24 in its simplest form. =
  26. 26.Write 4/40 in its simplest form. =
  27. 27.Is 6/7 in its simplest form? (a) No (b) Yes
  28. 28.Write 64/72 in its simplest form. =
  29. 29.Write 20/36 in its simplest form. =
  30. 30.Write 15/50 in its simplest form. =
  31. 31.Write 16/40 in its simplest form. =
  32. 32.Write 28/32 in its simplest form. =
  33. 33.Is 3/8 in its simplest form? (a) Yes (b) No
  34. 34.Write 7/49 in its simplest form. =
  35. 35.Is 5/9 in its simplest form? (a) Yes (b) No
  36. 36.Write 4/20 in its simplest form. =
  37. 37.Write 21/28 in its simplest form. =
  38. 38.What is the HCF of 9 and 18?
  39. 39.Write 27/63 in its simplest form. =
  40. 40.Write 4/10 in its simplest form. =

Answer key

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

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