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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 178 · 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.Write 18/21 in its simplest form. =
  2. 2.What is the HCF of 56 and 64?
  3. 3.Write 27/45 in its simplest form. =
  4. 4.What is the HCF of 14 and 20?
  5. 5.What is the HCF of 30 and 42?
  6. 6.What is the HCF of 15 and 25?
  7. 7.Write 3/15 in its simplest form. =
  8. 8.Write 9/24 in its simplest form. =
  9. 9.Is 2/9 in its simplest form? (a) No (b) Yes
  10. 10.Is 3/18 in its simplest form? (a) No (b) Yes
  11. 11.Write 18/27 in its simplest form. =
  12. 12.Write 6/18 in its simplest form. =
  13. 13.Write 36/40 in its simplest form. =
  14. 14.What is the HCF of 36 and 40?
  15. 15.Write 21/24 in its simplest form. =
  16. 16.What is the HCF of 36 and 63?
  17. 17.Is 6/10 in its simplest form? (a) No (b) Yes
  18. 18.Write 10/16 in its simplest form. =
  19. 19.Is 4/7 in its simplest form? (a) Yes (b) No
  20. 20.Write 8/32 in its simplest form. =
  21. 21.Write 3/21 in its simplest form. =
  22. 22.Write 18/45 in its simplest form. =
  23. 23.Write 2/4 in its simplest form. =
  24. 24.What is the HCF of 54 and 60?
  25. 25.What is the HCF of 12 and 15?
  26. 26.What is the HCF of 15 and 35?
  27. 27.What is the HCF of 4 and 12?
  28. 28.Write 15/27 in its simplest form. =
  29. 29.Is 3/5 in its simplest form? (a) No (b) Yes
  30. 30.Is 35/40 in its simplest form? (a) Yes (b) No
  31. 31.Is 25/30 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 12 and 27?
  33. 33.What is the HCF of 9 and 72?
  34. 34.Write 32/36 in its simplest form. =
  35. 35.Is 1/9 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 24 and 40?
  37. 37.Write 64/72 in its simplest form. =
  38. 38.Write 7/49 in its simplest form. =
  39. 39.Write 42/48 in its simplest form. =
  40. 40.Is 30/54 in its simplest form? (a) No (b) Yes

Answer key

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

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