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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 253 · 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 5/8 in its simplest form? (a) No (b) Yes
  2. 2.Write 45/50 in its simplest form. =
  3. 3.Is 20/25 in its simplest form? (a) No (b) Yes
  4. 4.Write 9/45 in its simplest form. =
  5. 5.Write 81/90 in its simplest form. =
  6. 6.What is the HCF of 8 and 36?
  7. 7.Write 9/36 in its simplest form. =
  8. 8.What is the HCF of 12 and 42?
  9. 9.Is 3/5 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 5 and 20?
  11. 11.Write 18/27 in its simplest form. =
  12. 12.What is the HCF of 9 and 15?
  13. 13.What is the HCF of 45 and 81?
  14. 14.Write 56/64 in its simplest form. =
  15. 15.Write 12/54 in its simplest form. =
  16. 16.Write 8/16 in its simplest form. =
  17. 17.Write 32/72 in its simplest form. =
  18. 18.What is the HCF of 3 and 9?
  19. 19.What is the HCF of 4 and 14?
  20. 20.Is 6/10 in its simplest form? (a) Yes (b) No
  21. 21.Write 9/81 in its simplest form. =
  22. 22.Write 35/49 in its simplest form. =
  23. 23.What is the HCF of 20 and 45?
  24. 24.What is the HCF of 25 and 35?
  25. 25.Write 35/45 in its simplest form. =
  26. 26.Write 16/20 in its simplest form. =
  27. 27.Is 1/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 36/40 in its simplest form. =
  29. 29.Write 20/24 in its simplest form. =
  30. 30.Is 7/8 in its simplest form? (a) Yes (b) No
  31. 31.Is 1/7 in its simplest form? (a) No (b) Yes
  32. 32.Is 1/2 in its simplest form? (a) Yes (b) No
  33. 33.Write 8/24 in its simplest form. =
  34. 34.Is 5/30 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 14 and 20?
  36. 36.Is 2/12 in its simplest form? (a) No (b) Yes
  37. 37.Is 1/10 in its simplest form? (a) No (b) Yes
  38. 38.Write 35/56 in its simplest form. =
  39. 39.What is the HCF of 9 and 72?
  40. 40.What is the HCF of 7 and 21?

Answer key

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

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