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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 831 · 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.Is 15/20 in its simplest form? (a) Yes (b) No
  2. 2.Is 4/32 in its simplest form? (a) No (b) Yes
  3. 3.Write 6/54 in its simplest form. =
  4. 4.Write 45/50 in its simplest form. =
  5. 5.What is the HCF of 4 and 20?
  6. 6.What is the HCF of 54 and 63?
  7. 7.Write 21/28 in its simplest form. =
  8. 8.Is 12/18 in its simplest form? (a) No (b) Yes
  9. 9.Is 4/14 in its simplest form? (a) No (b) Yes
  10. 10.Is 2/8 in its simplest form? (a) No (b) Yes
  11. 11.Is 3/5 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 5 and 25?
  13. 13.Write 63/72 in its simplest form. =
  14. 14.Is 4/10 in its simplest form? (a) Yes (b) No
  15. 15.Write 64/72 in its simplest form. =
  16. 16.Is 16/20 in its simplest form? (a) No (b) Yes
  17. 17.Write 3/21 in its simplest form. =
  18. 18.Is 12/27 in its simplest form? (a) No (b) Yes
  19. 19.Write 40/45 in its simplest form. =
  20. 20.Is 4/7 in its simplest form? (a) Yes (b) No
  21. 21.What is the HCF of 8 and 32?
  22. 22.Write 15/40 in its simplest form. =
  23. 23.Write 6/12 in its simplest form. =
  24. 24.Write 81/90 in its simplest form. =
  25. 25.Is 25/35 in its simplest form? (a) Yes (b) No
  26. 26.Is 10/25 in its simplest form? (a) Yes (b) No
  27. 27.Is 6/36 in its simplest form? (a) Yes (b) No
  28. 28.Is 6/21 in its simplest form? (a) Yes (b) No
  29. 29.Write 36/45 in its simplest form. =
  30. 30.Write 7/14 in its simplest form. =
  31. 31.Is 12/30 in its simplest form? (a) Yes (b) No
  32. 32.Write 32/40 in its simplest form. =
  33. 33.What is the HCF of 8 and 20?
  34. 34.Write 21/30 in its simplest form. =
  35. 35.What is the HCF of 5 and 30?
  36. 36.Is 4/9 in its simplest form? (a) Yes (b) No
  37. 37.Is 1/7 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 20 and 36?
  39. 39.Is 7/8 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 9 and 15?

Answer key

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

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