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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 669 · 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 12/18 in its simplest form. =
  2. 2.Write 16/40 in its simplest form. =
  3. 3.What is the HCF of 9 and 18?
  4. 4.Is 6/24 in its simplest form? (a) Yes (b) No
  5. 5.Write 21/49 in its simplest form. =
  6. 6.Write 6/54 in its simplest form. =
  7. 7.What is the HCF of 14 and 21?
  8. 8.Is 1/3 in its simplest form? (a) No (b) Yes
  9. 9.Is 2/18 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 9 and 81?
  11. 11.What is the HCF of 16 and 20?
  12. 12.Is 14/20 in its simplest form? (a) No (b) Yes
  13. 13.Is 2/9 in its simplest form? (a) Yes (b) No
  14. 14.Write 9/18 in its simplest form. =
  15. 15.Is 42/48 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 7 and 63?
  17. 17.What is the HCF of 30 and 42?
  18. 18.Is 36/42 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 20 and 28?
  20. 20.What is the HCF of 27 and 90?
  21. 21.Is 4/7 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 16 and 56?
  23. 23.Is 2/14 in its simplest form? (a) Yes (b) No
  24. 24.Write 24/40 in its simplest form. =
  25. 25.Write 20/24 in its simplest form. =
  26. 26.Is 2/16 in its simplest form? (a) No (b) Yes
  27. 27.Is 10/14 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 40 and 72?
  29. 29.Write 56/63 in its simplest form. =
  30. 30.What is the HCF of 6 and 15?
  31. 31.What is the HCF of 10 and 12?
  32. 32.Is 14/18 in its simplest form? (a) Yes (b) No
  33. 33.Write 25/45 in its simplest form. =
  34. 34.Is 6/9 in its simplest form? (a) Yes (b) No
  35. 35.Write 7/35 in its simplest form. =
  36. 36.Write 21/24 in its simplest form. =
  37. 37.Is 15/27 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 14 and 63?
  39. 39.Write 12/27 in its simplest form. =
  40. 40.Is 10/35 in its simplest form? (a) No (b) Yes

Answer key

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

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