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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 38 · 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 14/21 in its simplest form. =
  2. 2.Write 3/6 in its simplest form. =
  3. 3.What is the HCF of 48 and 54?
  4. 4.What is the HCF of 27 and 30?
  5. 5.Is 2/4 in its simplest form? (a) No (b) Yes
  6. 6.Write 7/35 in its simplest form. =
  7. 7.Write 25/30 in its simplest form. =
  8. 8.What is the HCF of 6 and 15?
  9. 9.Is 1/3 in its simplest form? (a) No (b) Yes
  10. 10.Write 6/15 in its simplest form. =
  11. 11.What is the HCF of 4 and 20?
  12. 12.Is 1/7 in its simplest form? (a) Yes (b) No
  13. 13.Write 8/18 in its simplest form. =
  14. 14.Is 32/36 in its simplest form? (a) No (b) Yes
  15. 15.Is 3/10 in its simplest form? (a) Yes (b) No
  16. 16.Is 7/9 in its simplest form? (a) No (b) Yes
  17. 17.Write 45/50 in its simplest form. =
  18. 18.Is 5/35 in its simplest form? (a) Yes (b) No
  19. 19.Is 6/42 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 35 and 42?
  21. 21.Write 27/45 in its simplest form. =
  22. 22.What is the HCF of 40 and 64?
  23. 23.Write 24/54 in its simplest form. =
  24. 24.Is 40/45 in its simplest form? (a) No (b) Yes
  25. 25.Is 3/4 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 4 and 28?
  27. 27.Is 15/20 in its simplest form? (a) No (b) Yes
  28. 28.Write 35/45 in its simplest form. =
  29. 29.What is the HCF of 4 and 18?
  30. 30.What is the HCF of 4 and 10?
  31. 31.Is 4/28 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 6 and 21?
  33. 33.Write 4/20 in its simplest form. =
  34. 34.Write 21/30 in its simplest form. =
  35. 35.What is the HCF of 10 and 12?
  36. 36.Is 1/4 in its simplest form? (a) No (b) Yes
  37. 37.Write 6/18 in its simplest form. =
  38. 38.Write 15/40 in its simplest form. =
  39. 39.Is 5/8 in its simplest form? (a) Yes (b) No
  40. 40.Is 1/5 in its simplest form? (a) Yes (b) No

Answer key

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

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