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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 438 · 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 10 and 45?
  2. 2.Is 4/16 in its simplest form? (a) Yes (b) No
  3. 3.Write 24/40 in its simplest form. =
  4. 4.Write 45/50 in its simplest form. =
  5. 5.Is 8/36 in its simplest form? (a) Yes (b) No
  6. 6.Is 2/7 in its simplest form? (a) No (b) Yes
  7. 7.Is 4/5 in its simplest form? (a) No (b) Yes
  8. 8.Is 27/30 in its simplest form? (a) Yes (b) No
  9. 9.Is 6/54 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 4 and 18?
  11. 11.Is 36/40 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 4 and 14?
  13. 13.Is 1/5 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 9 and 15?
  15. 15.What is the HCF of 32 and 56?
  16. 16.Is 3/7 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 2 and 20?
  18. 18.Is 3/30 in its simplest form? (a) No (b) Yes
  19. 19.Is 2/9 in its simplest form? (a) No (b) Yes
  20. 20.Write 42/48 in its simplest form. =
  21. 21.Write 6/27 in its simplest form. =
  22. 22.What is the HCF of 45 and 54?
  23. 23.Is 21/27 in its simplest form? (a) No (b) Yes
  24. 24.Is 7/8 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 12 and 28?
  26. 26.Is 42/48 in its simplest form? (a) No (b) Yes
  27. 27.Write 63/90 in its simplest form. =
  28. 28.Write 20/28 in its simplest form. =
  29. 29.Write 16/28 in its simplest form. =
  30. 30.Write 18/24 in its simplest form. =
  31. 31.What is the HCF of 6 and 18?
  32. 32.Is 9/21 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 18 and 45?
  34. 34.Write 10/45 in its simplest form. =
  35. 35.Write 49/70 in its simplest form. =
  36. 36.What is the HCF of 9 and 36?
  37. 37.Is 28/36 in its simplest form? (a) No (b) Yes
  38. 38.Is 25/35 in its simplest form? (a) No (b) Yes
  39. 39.Is 3/5 in its simplest form? (a) Yes (b) No
  40. 40.Is 24/54 in its simplest form? (a) No (b) Yes

Answer key

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

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