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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 692 · 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 18/63 in its simplest form. =
  2. 2.Write 3/9 in its simplest form. =
  3. 3.Write 32/72 in its simplest form. =
  4. 4.Write 27/63 in its simplest form. =
  5. 5.Is 1/4 in its simplest form? (a) No (b) Yes
  6. 6.What is the HCF of 40 and 45?
  7. 7.Is 9/21 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 30 and 54?
  9. 9.What is the HCF of 18 and 21?
  10. 10.Write 30/35 in its simplest form. =
  11. 11.Is 1/8 in its simplest form? (a) No (b) Yes
  12. 12.Is 3/4 in its simplest form? (a) No (b) Yes
  13. 13.Is 1/5 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 5 and 25?
  15. 15.What is the HCF of 6 and 10?
  16. 16.What is the HCF of 56 and 80?
  17. 17.Write 15/20 in its simplest form. =
  18. 18.Write 15/40 in its simplest form. =
  19. 19.What is the HCF of 2 and 10?
  20. 20.Write 20/28 in its simplest form. =
  21. 21.Is 24/54 in its simplest form? (a) No (b) Yes
  22. 22.Write 12/21 in its simplest form. =
  23. 23.What is the HCF of 16 and 20?
  24. 24.Write 7/42 in its simplest form. =
  25. 25.Is 2/14 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 6 and 18?
  27. 27.Write 8/40 in its simplest form. =
  28. 28.Is 9/12 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 20 and 25?
  30. 30.Write 56/63 in its simplest form. =
  31. 31.Write 24/28 in its simplest form. =
  32. 32.Is 16/18 in its simplest form? (a) Yes (b) No
  33. 33.Is 4/5 in its simplest form? (a) Yes (b) No
  34. 34.Write 6/24 in its simplest form. =
  35. 35.Is 4/6 in its simplest form? (a) Yes (b) No
  36. 36.Write 10/12 in its simplest form. =
  37. 37.Write 4/28 in its simplest form. =
  38. 38.Is 3/12 in its simplest form? (a) No (b) Yes
  39. 39.Is 4/9 in its simplest form? (a) No (b) Yes
  40. 40.Is 15/25 in its simplest form? (a) Yes (b) No

Answer key

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

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