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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 389 · 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 25/35 in its simplest form. =
  2. 2.Write 4/32 in its simplest form. =
  3. 3.Is 3/4 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 18 and 21?
  5. 5.Write 12/15 in its simplest form. =
  6. 6.Is 4/5 in its simplest form? (a) No (b) Yes
  7. 7.Write 4/10 in its simplest form. =
  8. 8.Is 9/21 in its simplest form? (a) No (b) Yes
  9. 9.Is 1/9 in its simplest form? (a) Yes (b) No
  10. 10.Is 20/45 in its simplest form? (a) Yes (b) No
  11. 11.Write 54/63 in its simplest form. =
  12. 12.Is 2/3 in its simplest form? (a) No (b) Yes
  13. 13.Is 35/40 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 4 and 8?
  15. 15.Is 30/42 in its simplest form? (a) No (b) Yes
  16. 16.Write 4/8 in its simplest form. =
  17. 17.What is the HCF of 21 and 49?
  18. 18.Write 3/9 in its simplest form. =
  19. 19.What is the HCF of 14 and 18?
  20. 20.Write 40/72 in its simplest form. =
  21. 21.Is 1/10 in its simplest form? (a) No (b) Yes
  22. 22.Is 10/15 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 56 and 64?
  24. 24.Is 9/12 in its simplest form? (a) Yes (b) No
  25. 25.Write 28/32 in its simplest form. =
  26. 26.What is the HCF of 28 and 32?
  27. 27.Write 24/28 in its simplest form. =
  28. 28.Is 3/21 in its simplest form? (a) No (b) Yes
  29. 29.Write 6/10 in its simplest form. =
  30. 30.Write 14/49 in its simplest form. =
  31. 31.Is 1/3 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 24 and 28?
  33. 33.Is 12/15 in its simplest form? (a) Yes (b) No
  34. 34.Is 1/4 in its simplest form? (a) Yes (b) No
  35. 35.Is 8/9 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 9 and 27?
  37. 37.Write 3/15 in its simplest form. =
  38. 38.Is 3/9 in its simplest form? (a) No (b) Yes
  39. 39.Is 4/9 in its simplest form? (a) Yes (b) No
  40. 40.Is 1/2 in its simplest form? (a) No (b) Yes

Answer key

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

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