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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 405 · 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.What is the HCF of 16 and 20?
  2. 2.What is the HCF of 6 and 48?
  3. 3.What is the HCF of 4 and 18?
  4. 4.Write 25/30 in its simplest form. =
  5. 5.Is 6/12 in its simplest form? (a) No (b) Yes
  6. 6.Is 1/2 in its simplest form? (a) Yes (b) No
  7. 7.Is 30/36 in its simplest form? (a) No (b) Yes
  8. 8.Is 10/25 in its simplest form? (a) No (b) Yes
  9. 9.Write 20/45 in its simplest form. =
  10. 10.What is the HCF of 5 and 20?
  11. 11.Is 12/21 in its simplest form? (a) Yes (b) No
  12. 12.Write 9/63 in its simplest form. =
  13. 13.Write 35/45 in its simplest form. =
  14. 14.What is the HCF of 6 and 36?
  15. 15.Is 7/8 in its simplest form? (a) No (b) Yes
  16. 16.Write 3/24 in its simplest form. =
  17. 17.Write 27/72 in its simplest form. =
  18. 18.Write 6/30 in its simplest form. =
  19. 19.Write 14/18 in its simplest form. =
  20. 20.Is 5/9 in its simplest form? (a) Yes (b) No
  21. 21.Write 3/27 in its simplest form. =
  22. 22.What is the HCF of 63 and 90?
  23. 23.Write 28/36 in its simplest form. =
  24. 24.Is 3/10 in its simplest form? (a) No (b) Yes
  25. 25.Write 8/64 in its simplest form. =
  26. 26.Write 4/6 in its simplest form. =
  27. 27.What is the HCF of 24 and 28?
  28. 28.Is 3/7 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 14 and 21?
  30. 30.What is the HCF of 63 and 81?
  31. 31.Is 2/8 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 18 and 45?
  33. 33.Write 9/12 in its simplest form. =
  34. 34.Write 40/72 in its simplest form. =
  35. 35.Write 35/40 in its simplest form. =
  36. 36.Write 4/16 in its simplest form. =
  37. 37.Is 1/9 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 3 and 27?
  39. 39.What is the HCF of 49 and 70?
  40. 40.What is the HCF of 64 and 72?

Answer key

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

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