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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 94 · 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 3 and 9?
  2. 2.Write 10/45 in its simplest form. =
  3. 3.Write 4/16 in its simplest form. =
  4. 4.What is the HCF of 18 and 27?
  5. 5.What is the HCF of 18 and 42?
  6. 6.Is 3/8 in its simplest form? (a) Yes (b) No
  7. 7.Is 3/30 in its simplest form? (a) No (b) Yes
  8. 8.Write 27/45 in its simplest form. =
  9. 9.Is 25/30 in its simplest form? (a) Yes (b) No
  10. 10.Write 16/56 in its simplest form. =
  11. 11.Is 1/2 in its simplest form? (a) Yes (b) No
  12. 12.Is 5/7 in its simplest form? (a) No (b) Yes
  13. 13.What is the HCF of 32 and 40?
  14. 14.Write 18/63 in its simplest form. =
  15. 15.What is the HCF of 9 and 72?
  16. 16.Write 36/45 in its simplest form. =
  17. 17.Is 35/50 in its simplest form? (a) Yes (b) No
  18. 18.Write 30/42 in its simplest form. =
  19. 19.Is 6/7 in its simplest form? (a) No (b) Yes
  20. 20.What is the HCF of 8 and 10?
  21. 21.Is 2/20 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 16 and 72?
  23. 23.Is 2/4 in its simplest form? (a) No (b) Yes
  24. 24.Write 15/21 in its simplest form. =
  25. 25.Write 28/49 in its simplest form. =
  26. 26.What is the HCF of 9 and 27?
  27. 27.Write 5/15 in its simplest form. =
  28. 28.What is the HCF of 40 and 72?
  29. 29.What is the HCF of 12 and 18?
  30. 30.Write 42/54 in its simplest form. =
  31. 31.Is 3/5 in its simplest form? (a) Yes (b) No
  32. 32.What is the HCF of 2 and 4?
  33. 33.What is the HCF of 3 and 6?
  34. 34.Is 4/9 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 6 and 15?
  36. 36.Write 4/18 in its simplest form. =
  37. 37.What is the HCF of 12 and 27?
  38. 38.What is the HCF of 16 and 28?
  39. 39.Write 3/27 in its simplest form. =
  40. 40.What is the HCF of 20 and 32?

Answer key

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

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