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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 49 · 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 5 and 35?
  2. 2.What is the HCF of 4 and 28?
  3. 3.Is 24/27 in its simplest form? (a) No (b) Yes
  4. 4.What is the HCF of 21 and 35?
  5. 5.Write 9/24 in its simplest form. =
  6. 6.Is 8/10 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 24 and 56?
  8. 8.Is 7/9 in its simplest form? (a) No (b) Yes
  9. 9.Write 18/45 in its simplest form. =
  10. 10.What is the HCF of 40 and 56?
  11. 11.Write 42/60 in its simplest form. =
  12. 12.Is 1/2 in its simplest form? (a) Yes (b) No
  13. 13.Write 15/21 in its simplest form. =
  14. 14.Write 24/32 in its simplest form. =
  15. 15.Write 15/18 in its simplest form. =
  16. 16.What is the HCF of 18 and 30?
  17. 17.Write 6/24 in its simplest form. =
  18. 18.What is the HCF of 10 and 12?
  19. 19.Is 5/9 in its simplest form? (a) Yes (b) No
  20. 20.Write 5/25 in its simplest form. =
  21. 21.Write 24/54 in its simplest form. =
  22. 22.Write 10/45 in its simplest form. =
  23. 23.What is the HCF of 40 and 48?
  24. 24.Is 36/40 in its simplest form? (a) Yes (b) No
  25. 25.Is 35/45 in its simplest form? (a) Yes (b) No
  26. 26.Is 8/9 in its simplest form? (a) No (b) Yes
  27. 27.Write 3/6 in its simplest form. =
  28. 28.Is 9/10 in its simplest form? (a) Yes (b) No
  29. 29.Write 18/24 in its simplest form. =
  30. 30.Write 3/27 in its simplest form. =
  31. 31.Write 15/35 in its simplest form. =
  32. 32.What is the HCF of 16 and 36?
  33. 33.Write 10/25 in its simplest form. =
  34. 34.What is the HCF of 4 and 20?
  35. 35.Is 35/50 in its simplest form? (a) No (b) Yes
  36. 36.Write 12/16 in its simplest form. =
  37. 37.Write 8/32 in its simplest form. =
  38. 38.Write 36/40 in its simplest form. =
  39. 39.Is 4/18 in its simplest form? (a) Yes (b) No
  40. 40.Write 5/15 in its simplest form. =

Answer key

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

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