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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 31 · 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 28/32 in its simplest form. =
  2. 2.Is 7/9 in its simplest form? (a) Yes (b) No
  3. 3.Is 1/5 in its simplest form? (a) Yes (b) No
  4. 4.Write 21/28 in its simplest form. =
  5. 5.What is the HCF of 16 and 40?
  6. 6.Is 5/9 in its simplest form? (a) No (b) Yes
  7. 7.Is 5/8 in its simplest form? (a) No (b) Yes
  8. 8.Write 5/40 in its simplest form. =
  9. 9.Write 6/14 in its simplest form. =
  10. 10.Write 10/35 in its simplest form. =
  11. 11.What is the HCF of 7 and 28?
  12. 12.Write 42/48 in its simplest form. =
  13. 13.What is the HCF of 32 and 56?
  14. 14.Write 21/35 in its simplest form. =
  15. 15.Is 1/4 in its simplest form? (a) No (b) Yes
  16. 16.Write 4/18 in its simplest form. =
  17. 17.What is the HCF of 6 and 21?
  18. 18.Write 36/40 in its simplest form. =
  19. 19.Write 7/28 in its simplest form. =
  20. 20.What is the HCF of 10 and 45?
  21. 21.Write 2/4 in its simplest form. =
  22. 22.Write 32/72 in its simplest form. =
  23. 23.Is 24/27 in its simplest form? (a) No (b) Yes
  24. 24.Write 10/18 in its simplest form. =
  25. 25.What is the HCF of 5 and 20?
  26. 26.Write 21/70 in its simplest form. =
  27. 27.Is 24/30 in its simplest form? (a) No (b) Yes
  28. 28.Is 14/20 in its simplest form? (a) No (b) Yes
  29. 29.Is 3/18 in its simplest form? (a) No (b) Yes
  30. 30.Write 18/60 in its simplest form. =
  31. 31.Is 20/45 in its simplest form? (a) No (b) Yes
  32. 32.Write 27/72 in its simplest form. =
  33. 33.Is 9/21 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 6 and 9?
  35. 35.Write 5/30 in its simplest form. =
  36. 36.Write 8/40 in its simplest form. =
  37. 37.Write 42/60 in its simplest form. =
  38. 38.What is the HCF of 27 and 63?
  39. 39.Is 1/9 in its simplest form? (a) Yes (b) No
  40. 40.Is 8/9 in its simplest form? (a) No (b) Yes

Answer key

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

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