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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 897 · 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 27 and 90?
  2. 2.What is the HCF of 18 and 24?
  3. 3.What is the HCF of 63 and 81?
  4. 4.Is 2/7 in its simplest form? (a) Yes (b) No
  5. 5.Write 5/30 in its simplest form. =
  6. 6.Write 12/21 in its simplest form. =
  7. 7.Write 49/63 in its simplest form. =
  8. 8.Write 24/32 in its simplest form. =
  9. 9.Write 15/50 in its simplest form. =
  10. 10.Write 54/60 in its simplest form. =
  11. 11.Write 20/36 in its simplest form. =
  12. 12.Is 5/7 in its simplest form? (a) No (b) Yes
  13. 13.Is 25/30 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 18 and 27?
  15. 15.Write 20/32 in its simplest form. =
  16. 16.Write 7/63 in its simplest form. =
  17. 17.Is 1/3 in its simplest form? (a) Yes (b) No
  18. 18.Write 24/27 in its simplest form. =
  19. 19.Write 24/80 in its simplest form. =
  20. 20.Is 6/7 in its simplest form? (a) No (b) Yes
  21. 21.Is 4/5 in its simplest form? (a) No (b) Yes
  22. 22.Is 2/20 in its simplest form? (a) No (b) Yes
  23. 23.Write 20/35 in its simplest form. =
  24. 24.Write 4/28 in its simplest form. =
  25. 25.What is the HCF of 20 and 36?
  26. 26.What is the HCF of 3 and 6?
  27. 27.Write 8/20 in its simplest form. =
  28. 28.Is 30/36 in its simplest form? (a) Yes (b) No
  29. 29.Is 24/28 in its simplest form? (a) Yes (b) No
  30. 30.What is the HCF of 24 and 40?
  31. 31.Is 1/7 in its simplest form? (a) No (b) Yes
  32. 32.Is 2/12 in its simplest form? (a) Yes (b) No
  33. 33.Write 63/70 in its simplest form. =
  34. 34.Is 3/10 in its simplest form? (a) Yes (b) No
  35. 35.Write 10/14 in its simplest form. =
  36. 36.Write 6/18 in its simplest form. =
  37. 37.Is 6/42 in its simplest form? (a) Yes (b) No
  38. 38.Write 16/36 in its simplest form. =
  39. 39.What is the HCF of 15 and 25?
  40. 40.Is 5/9 in its simplest form? (a) Yes (b) No

Answer key

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

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