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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 427 · 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 4/10 in its simplest form? (a) No (b) Yes
  2. 2.What is the HCF of 36 and 81?
  3. 3.Write 24/27 in its simplest form. =
  4. 4.Write 12/54 in its simplest form. =
  5. 5.What is the HCF of 16 and 40?
  6. 6.Is 6/15 in its simplest form? (a) No (b) Yes
  7. 7.Is 21/30 in its simplest form? (a) No (b) Yes
  8. 8.What is the HCF of 30 and 54?
  9. 9.Write 15/50 in its simplest form. =
  10. 10.Write 15/20 in its simplest form. =
  11. 11.What is the HCF of 21 and 28?
  12. 12.Write 8/28 in its simplest form. =
  13. 13.Is 1/8 in its simplest form? (a) No (b) Yes
  14. 14.What is the HCF of 12 and 16?
  15. 15.Write 24/28 in its simplest form. =
  16. 16.Write 24/42 in its simplest form. =
  17. 17.Write 40/64 in its simplest form. =
  18. 18.Is 7/8 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 45 and 50?
  20. 20.Write 4/32 in its simplest form. =
  21. 21.Write 3/12 in its simplest form. =
  22. 22.Is 4/7 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 15 and 21?
  24. 24.Write 6/36 in its simplest form. =
  25. 25.Is 16/20 in its simplest form? (a) No (b) Yes
  26. 26.Is 1/7 in its simplest form? (a) No (b) Yes
  27. 27.Is 8/9 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 6 and 30?
  29. 29.Write 18/45 in its simplest form. =
  30. 30.What is the HCF of 24 and 30?
  31. 31.Write 16/36 in its simplest form. =
  32. 32.Is 3/7 in its simplest form? (a) No (b) Yes
  33. 33.Is 28/40 in its simplest form? (a) No (b) Yes
  34. 34.Write 10/45 in its simplest form. =
  35. 35.Write 15/24 in its simplest form. =
  36. 36.Is 24/27 in its simplest form? (a) Yes (b) No
  37. 37.Is 10/25 in its simplest form? (a) No (b) Yes
  38. 38.Write 72/80 in its simplest form. =
  39. 39.What is the HCF of 20 and 36?
  40. 40.What is the HCF of 10 and 18?

Answer key

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

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