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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 66 · 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 1/7 in its simplest form? (a) Yes (b) No
  2. 2.Is 18/20 in its simplest form? (a) No (b) Yes
  3. 3.Is 10/25 in its simplest form? (a) No (b) Yes
  4. 4.Write 9/24 in its simplest form. =
  5. 5.What is the HCF of 32 and 56?
  6. 6.Is 5/7 in its simplest form? (a) Yes (b) No
  7. 7.Write 42/49 in its simplest form. =
  8. 8.Is 12/42 in its simplest form? (a) No (b) Yes
  9. 9.What is the HCF of 7 and 28?
  10. 10.Write 40/64 in its simplest form. =
  11. 11.What is the HCF of 6 and 15?
  12. 12.Is 30/42 in its simplest form? (a) Yes (b) No
  13. 13.Write 4/14 in its simplest form. =
  14. 14.Write 25/40 in its simplest form. =
  15. 15.What is the HCF of 21 and 49?
  16. 16.Is 3/15 in its simplest form? (a) Yes (b) No
  17. 17.Is 2/14 in its simplest form? (a) Yes (b) No
  18. 18.What is the HCF of 64 and 72?
  19. 19.What is the HCF of 10 and 25?
  20. 20.What is the HCF of 9 and 81?
  21. 21.Is 4/9 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 16 and 36?
  23. 23.Is 12/20 in its simplest form? (a) No (b) Yes
  24. 24.Is 24/30 in its simplest form? (a) No (b) Yes
  25. 25.Write 5/45 in its simplest form. =
  26. 26.Is 28/40 in its simplest form? (a) Yes (b) No
  27. 27.Is 5/30 in its simplest form? (a) No (b) Yes
  28. 28.Is 3/10 in its simplest form? (a) Yes (b) No
  29. 29.Is 15/18 in its simplest form? (a) Yes (b) No
  30. 30.Is 25/35 in its simplest form? (a) No (b) Yes
  31. 31.Write 2/20 in its simplest form. =
  32. 32.Is 1/10 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 6 and 54?
  34. 34.Is 6/36 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 8 and 16?
  36. 36.What is the HCF of 8 and 12?
  37. 37.Write 28/35 in its simplest form. =
  38. 38.Write 5/40 in its simplest form. =
  39. 39.Write 56/63 in its simplest form. =
  40. 40.Is 54/60 in its simplest form? (a) No (b) Yes

Answer key

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

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