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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 171 · 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 12/20 in its simplest form. =
  2. 2.Write 5/10 in its simplest form. =
  3. 3.What is the HCF of 7 and 21?
  4. 4.Write 35/56 in its simplest form. =
  5. 5.What is the HCF of 15 and 18?
  6. 6.What is the HCF of 18 and 24?
  7. 7.Write 12/16 in its simplest form. =
  8. 8.What is the HCF of 9 and 27?
  9. 9.Is 5/8 in its simplest form? (a) Yes (b) No
  10. 10.Write 7/56 in its simplest form. =
  11. 11.Write 21/35 in its simplest form. =
  12. 12.Is 4/28 in its simplest form? (a) Yes (b) No
  13. 13.What is the HCF of 4 and 36?
  14. 14.What is the HCF of 42 and 54?
  15. 15.Write 36/81 in its simplest form. =
  16. 16.Is 9/30 in its simplest form? (a) Yes (b) No
  17. 17.What is the HCF of 7 and 49?
  18. 18.Is 25/35 in its simplest form? (a) Yes (b) No
  19. 19.Write 3/12 in its simplest form. =
  20. 20.Is 1/8 in its simplest form? (a) No (b) Yes
  21. 21.Write 40/64 in its simplest form. =
  22. 22.What is the HCF of 20 and 25?
  23. 23.What is the HCF of 18 and 20?
  24. 24.Is 6/8 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 7 and 42?
  26. 26.Write 64/72 in its simplest form. =
  27. 27.What is the HCF of 24 and 64?
  28. 28.Is 12/28 in its simplest form? (a) No (b) Yes
  29. 29.Is 21/27 in its simplest form? (a) No (b) Yes
  30. 30.Write 56/63 in its simplest form. =
  31. 31.Write 8/40 in its simplest form. =
  32. 32.Write 7/14 in its simplest form. =
  33. 33.Is 9/10 in its simplest form? (a) Yes (b) No
  34. 34.Is 24/30 in its simplest form? (a) Yes (b) No
  35. 35.Is 5/7 in its simplest form? (a) Yes (b) No
  36. 36.Is 12/14 in its simplest form? (a) No (b) Yes
  37. 37.Is 3/7 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 15 and 40?
  39. 39.What is the HCF of 4 and 20?
  40. 40.Is 5/9 in its simplest form? (a) Yes (b) No

Answer key

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

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