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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 540 · 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 9/45 in its simplest form. =
  2. 2.Write 3/30 in its simplest form. =
  3. 3.Write 45/63 in its simplest form. =
  4. 4.Write 6/9 in its simplest form. =
  5. 5.Write 9/81 in its simplest form. =
  6. 6.What is the HCF of 12 and 21?
  7. 7.Write 20/32 in its simplest form. =
  8. 8.Write 20/24 in its simplest form. =
  9. 9.Is 9/21 in its simplest form? (a) No (b) Yes
  10. 10.Write 18/48 in its simplest form. =
  11. 11.Write 2/18 in its simplest form. =
  12. 12.What is the HCF of 7 and 21?
  13. 13.Write 81/90 in its simplest form. =
  14. 14.What is the HCF of 2 and 4?
  15. 15.Write 12/30 in its simplest form. =
  16. 16.Write 3/24 in its simplest form. =
  17. 17.Write 48/54 in its simplest form. =
  18. 18.What is the HCF of 6 and 12?
  19. 19.Write 2/6 in its simplest form. =
  20. 20.What is the HCF of 8 and 28?
  21. 21.Write 18/24 in its simplest form. =
  22. 22.Is 4/5 in its simplest form? (a) No (b) Yes
  23. 23.Is 1/3 in its simplest form? (a) No (b) Yes
  24. 24.Write 3/27 in its simplest form. =
  25. 25.Write 18/21 in its simplest form. =
  26. 26.Write 9/30 in its simplest form. =
  27. 27.Write 49/70 in its simplest form. =
  28. 28.Is 1/10 in its simplest form? (a) Yes (b) No
  29. 29.What is the HCF of 32 and 40?
  30. 30.Is 15/35 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 15 and 40?
  32. 32.What is the HCF of 20 and 36?
  33. 33.Write 3/12 in its simplest form. =
  34. 34.Is 12/32 in its simplest form? (a) No (b) Yes
  35. 35.Is 10/18 in its simplest form? (a) Yes (b) No
  36. 36.Is 12/30 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 9 and 36?
  38. 38.Is 3/12 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 2 and 14?
  40. 40.What is the HCF of 6 and 21?

Answer key

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

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