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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 509 · 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 72/81 in its simplest form. =
  2. 2.Write 15/24 in its simplest form. =
  3. 3.Write 49/63 in its simplest form. =
  4. 4.Write 9/36 in its simplest form. =
  5. 5.Is 2/5 in its simplest form? (a) Yes (b) No
  6. 6.Is 2/8 in its simplest form? (a) Yes (b) No
  7. 7.Is 8/36 in its simplest form? (a) Yes (b) No
  8. 8.What is the HCF of 16 and 36?
  9. 9.What is the HCF of 10 and 15?
  10. 10.What is the HCF of 18 and 48?
  11. 11.Is 12/42 in its simplest form? (a) Yes (b) No
  12. 12.Is 18/60 in its simplest form? (a) No (b) Yes
  13. 13.Is 36/40 in its simplest form? (a) No (b) Yes
  14. 14.Write 10/45 in its simplest form. =
  15. 15.Write 6/12 in its simplest form. =
  16. 16.Is 12/16 in its simplest form? (a) Yes (b) No
  17. 17.Write 2/4 in its simplest form. =
  18. 18.Is 25/30 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 4 and 36?
  20. 20.Is 9/10 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 3 and 9?
  22. 22.Write 8/18 in its simplest form. =
  23. 23.Write 42/49 in its simplest form. =
  24. 24.Write 42/54 in its simplest form. =
  25. 25.Is 3/5 in its simplest form? (a) No (b) Yes
  26. 26.Write 36/42 in its simplest form. =
  27. 27.What is the HCF of 5 and 45?
  28. 28.Write 3/21 in its simplest form. =
  29. 29.Is 5/40 in its simplest form? (a) No (b) Yes
  30. 30.Is 20/25 in its simplest form? (a) No (b) Yes
  31. 31.Is 2/10 in its simplest form? (a) No (b) Yes
  32. 32.Write 28/36 in its simplest form. =
  33. 33.What is the HCF of 7 and 35?
  34. 34.Is 12/21 in its simplest form? (a) Yes (b) No
  35. 35.What is the HCF of 14 and 21?
  36. 36.What is the HCF of 35 and 63?
  37. 37.Is 25/40 in its simplest form? (a) Yes (b) No
  38. 38.Is 4/10 in its simplest form? (a) No (b) Yes
  39. 39.Write 27/36 in its simplest form. =
  40. 40.Is 6/60 in its simplest form? (a) No (b) Yes

Answer key

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

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