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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 912 · 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 12/30 in its simplest form. =
  2. 2.Write 6/27 in its simplest form. =
  3. 3.What is the HCF of 18 and 60?
  4. 4.What is the HCF of 14 and 18?
  5. 5.Write 6/21 in its simplest form. =
  6. 6.What is the HCF of 12 and 54?
  7. 7.What is the HCF of 6 and 60?
  8. 8.What is the HCF of 24 and 42?
  9. 9.Is 8/18 in its simplest form? (a) Yes (b) No
  10. 10.Write 9/90 in its simplest form. =
  11. 11.Write 30/35 in its simplest form. =
  12. 12.What is the HCF of 49 and 70?
  13. 13.Is 3/5 in its simplest form? (a) Yes (b) No
  14. 14.Is 2/3 in its simplest form? (a) No (b) Yes
  15. 15.Write 12/28 in its simplest form. =
  16. 16.Is 4/28 in its simplest form? (a) Yes (b) No
  17. 17.Is 1/9 in its simplest form? (a) Yes (b) No
  18. 18.Write 2/10 in its simplest form. =
  19. 19.Is 12/32 in its simplest form? (a) No (b) Yes
  20. 20.Write 2/8 in its simplest form. =
  21. 21.What is the HCF of 8 and 40?
  22. 22.Write 16/36 in its simplest form. =
  23. 23.Write 3/6 in its simplest form. =
  24. 24.Is 3/6 in its simplest form? (a) Yes (b) No
  25. 25.Write 14/21 in its simplest form. =
  26. 26.What is the HCF of 4 and 8?
  27. 27.What is the HCF of 16 and 72?
  28. 28.Write 10/12 in its simplest form. =
  29. 29.Write 8/72 in its simplest form. =
  30. 30.Is 2/12 in its simplest form? (a) Yes (b) No
  31. 31.Write 15/40 in its simplest form. =
  32. 32.Is 4/32 in its simplest form? (a) Yes (b) No
  33. 33.Write 81/90 in its simplest form. =
  34. 34.Is 1/10 in its simplest form? (a) Yes (b) No
  35. 35.Write 6/12 in its simplest form. =
  36. 36.Is 1/6 in its simplest form? (a) Yes (b) No
  37. 37.What is the HCF of 28 and 35?
  38. 38.Write 30/36 in its simplest form. =
  39. 39.Write 9/54 in its simplest form. =
  40. 40.Is 7/9 in its simplest form? (a) Yes (b) No

Answer key

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

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