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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 3 · 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 20/45 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 9 and 12?
  3. 3.Write 18/24 in its simplest form. =
  4. 4.What is the HCF of 4 and 28?
  5. 5.What is the HCF of 5 and 25?
  6. 6.Is 3/7 in its simplest form? (a) No (b) Yes
  7. 7.What is the HCF of 15 and 20?
  8. 8.Is 10/45 in its simplest form? (a) Yes (b) No
  9. 9.Is 12/18 in its simplest form? (a) Yes (b) No
  10. 10.Write 9/12 in its simplest form. =
  11. 11.What is the HCF of 4 and 36?
  12. 12.What is the HCF of 12 and 14?
  13. 13.Write 14/63 in its simplest form. =
  14. 14.What is the HCF of 3 and 21?
  15. 15.What is the HCF of 24 and 54?
  16. 16.Is 5/9 in its simplest form? (a) No (b) Yes
  17. 17.What is the HCF of 18 and 48?
  18. 18.Is 4/9 in its simplest form? (a) No (b) Yes
  19. 19.Write 10/25 in its simplest form. =
  20. 20.Write 2/4 in its simplest form. =
  21. 21.Write 2/20 in its simplest form. =
  22. 22.What is the HCF of 15 and 18?
  23. 23.Write 21/27 in its simplest form. =
  24. 24.Write 56/72 in its simplest form. =
  25. 25.Is 5/6 in its simplest form? (a) Yes (b) No
  26. 26.Is 2/3 in its simplest form? (a) Yes (b) No
  27. 27.Write 63/90 in its simplest form. =
  28. 28.Write 15/24 in its simplest form. =
  29. 29.What is the HCF of 2 and 8?
  30. 30.Write 27/90 in its simplest form. =
  31. 31.What is the HCF of 15 and 24?
  32. 32.Is 4/16 in its simplest form? (a) Yes (b) No
  33. 33.Is 5/35 in its simplest form? (a) Yes (b) No
  34. 34.What is the HCF of 64 and 72?
  35. 35.Is 3/8 in its simplest form? (a) Yes (b) No
  36. 36.Write 32/36 in its simplest form. =
  37. 37.Write 20/25 in its simplest form. =
  38. 38.Write 9/45 in its simplest form. =
  39. 39.Write 5/40 in its simplest form. =
  40. 40.Write 45/54 in its simplest form. =

Answer key

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

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