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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 802 · 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 21/24 in its simplest form. =
  2. 2.What is the HCF of 27 and 90?
  3. 3.What is the HCF of 42 and 54?
  4. 4.Is 18/42 in its simplest form? (a) No (b) Yes
  5. 5.Write 6/20 in its simplest form. =
  6. 6.Write 16/28 in its simplest form. =
  7. 7.Write 27/63 in its simplest form. =
  8. 8.Is 7/9 in its simplest form? (a) No (b) Yes
  9. 9.Write 35/40 in its simplest form. =
  10. 10.Write 12/42 in its simplest form. =
  11. 11.What is the HCF of 12 and 32?
  12. 12.What is the HCF of 6 and 12?
  13. 13.Write 9/27 in its simplest form. =
  14. 14.Is 5/7 in its simplest form? (a) No (b) Yes
  15. 15.Is 4/8 in its simplest form? (a) No (b) Yes
  16. 16.Is 4/28 in its simplest form? (a) Yes (b) No
  17. 17.Is 9/12 in its simplest form? (a) Yes (b) No
  18. 18.Write 18/42 in its simplest form. =
  19. 19.What is the HCF of 63 and 70?
  20. 20.Is 1/3 in its simplest form? (a) Yes (b) No
  21. 21.Is 3/21 in its simplest form? (a) No (b) Yes
  22. 22.Write 8/48 in its simplest form. =
  23. 23.Is 28/36 in its simplest form? (a) Yes (b) No
  24. 24.Write 45/63 in its simplest form. =
  25. 25.Is 12/15 in its simplest form? (a) Yes (b) No
  26. 26.Write 42/60 in its simplest form. =
  27. 27.What is the HCF of 4 and 28?
  28. 28.Write 14/18 in its simplest form. =
  29. 29.Write 3/15 in its simplest form. =
  30. 30.Write 14/49 in its simplest form. =
  31. 31.What is the HCF of 12 and 21?
  32. 32.What is the HCF of 9 and 36?
  33. 33.What is the HCF of 25 and 30?
  34. 34.What is the HCF of 8 and 32?
  35. 35.What is the HCF of 4 and 36?
  36. 36.Write 2/8 in its simplest form. =
  37. 37.Write 4/6 in its simplest form. =
  38. 38.What is the HCF of 15 and 24?
  39. 39.What is the HCF of 35 and 50?
  40. 40.Write 72/81 in its simplest form. =

Answer key

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

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