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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 510 · 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 12/15 in its simplest form. =
  2. 2.Write 2/10 in its simplest form. =
  3. 3.What is the HCF of 21 and 24?
  4. 4.What is the HCF of 7 and 49?
  5. 5.Is 9/15 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 6 and 24?
  7. 7.What is the HCF of 7 and 21?
  8. 8.Is 20/25 in its simplest form? (a) No (b) Yes
  9. 9.Is 25/45 in its simplest form? (a) Yes (b) No
  10. 10.Write 4/8 in its simplest form. =
  11. 11.Is 9/24 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 3 and 18?
  13. 13.Is 15/40 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 25 and 35?
  15. 15.What is the HCF of 54 and 63?
  16. 16.What is the HCF of 6 and 15?
  17. 17.What is the HCF of 3 and 24?
  18. 18.Write 25/35 in its simplest form. =
  19. 19.What is the HCF of 49 and 63?
  20. 20.Write 5/30 in its simplest form. =
  21. 21.What is the HCF of 35 and 49?
  22. 22.Write 15/50 in its simplest form. =
  23. 23.Is 18/21 in its simplest form? (a) No (b) Yes
  24. 24.Is 1/2 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 6 and 12?
  26. 26.Is 3/21 in its simplest form? (a) No (b) Yes
  27. 27.Write 28/63 in its simplest form. =
  28. 28.What is the HCF of 30 and 36?
  29. 29.Write 24/64 in its simplest form. =
  30. 30.What is the HCF of 2 and 4?
  31. 31.What is the HCF of 5 and 20?
  32. 32.Is 5/6 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 12 and 21?
  34. 34.Is 9/12 in its simplest form? (a) Yes (b) No
  35. 35.Is 1/4 in its simplest form? (a) Yes (b) No
  36. 36.What is the HCF of 16 and 56?
  37. 37.What is the HCF of 8 and 32?
  38. 38.Is 15/50 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 16 and 40?
  40. 40.What is the HCF of 16 and 18?

Answer key

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

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