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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 920 · 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 45 and 72?
  2. 2.What is the HCF of 56 and 80?
  3. 3.Is 5/40 in its simplest form? (a) No (b) Yes
  4. 4.Write 42/49 in its simplest form. =
  5. 5.Write 14/18 in its simplest form. =
  6. 6.Write 45/81 in its simplest form. =
  7. 7.Write 48/56 in its simplest form. =
  8. 8.Write 3/9 in its simplest form. =
  9. 9.What is the HCF of 20 and 45?
  10. 10.Is 1/2 in its simplest form? (a) No (b) Yes
  11. 11.Write 12/14 in its simplest form. =
  12. 12.Write 8/48 in its simplest form. =
  13. 13.Is 5/7 in its simplest form? (a) No (b) Yes
  14. 14.Is 2/7 in its simplest form? (a) No (b) Yes
  15. 15.What is the HCF of 5 and 15?
  16. 16.Is 10/15 in its simplest form? (a) No (b) Yes
  17. 17.Is 25/35 in its simplest form? (a) Yes (b) No
  18. 18.Write 25/45 in its simplest form. =
  19. 19.What is the HCF of 3 and 12?
  20. 20.Write 8/32 in its simplest form. =
  21. 21.Write 30/36 in its simplest form. =
  22. 22.Write 18/20 in its simplest form. =
  23. 23.Is 6/10 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 24 and 32?
  25. 25.What is the HCF of 27 and 90?
  26. 26.Is 8/18 in its simplest form? (a) Yes (b) No
  27. 27.Write 7/70 in its simplest form. =
  28. 28.Write 4/28 in its simplest form. =
  29. 29.Is 2/4 in its simplest form? (a) No (b) Yes
  30. 30.Write 15/21 in its simplest form. =
  31. 31.Write 2/18 in its simplest form. =
  32. 32.Write 21/56 in its simplest form. =
  33. 33.What is the HCF of 35 and 63?
  34. 34.Is 18/24 in its simplest form? (a) No (b) Yes
  35. 35.Is 4/5 in its simplest form? (a) Yes (b) No
  36. 36.Write 5/30 in its simplest form. =
  37. 37.Write 8/56 in its simplest form. =
  38. 38.Write 9/24 in its simplest form. =
  39. 39.Is 1/4 in its simplest form? (a) Yes (b) No
  40. 40.Is 6/20 in its simplest form? (a) No (b) Yes

Answer key

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

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