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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 864 · 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 18/42 in its simplest form. =
  2. 2.Is 12/18 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 3 and 18?
  4. 4.What is the HCF of 4 and 28?
  5. 5.What is the HCF of 27 and 30?
  6. 6.Write 18/60 in its simplest form. =
  7. 7.What is the HCF of 7 and 21?
  8. 8.What is the HCF of 6 and 21?
  9. 9.What is the HCF of 16 and 18?
  10. 10.Is 1/4 in its simplest form? (a) Yes (b) No
  11. 11.Write 2/16 in its simplest form. =
  12. 12.Is 5/9 in its simplest form? (a) No (b) Yes
  13. 13.Is 5/50 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 40 and 72?
  15. 15.Write 16/72 in its simplest form. =
  16. 16.Write 35/42 in its simplest form. =
  17. 17.Write 10/18 in its simplest form. =
  18. 18.What is the HCF of 2 and 12?
  19. 19.Write 9/21 in its simplest form. =
  20. 20.Is 6/30 in its simplest form? (a) No (b) Yes
  21. 21.Write 14/16 in its simplest form. =
  22. 22.What is the HCF of 6 and 15?
  23. 23.What is the HCF of 8 and 24?
  24. 24.Write 2/14 in its simplest form. =
  25. 25.Is 2/10 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 24 and 40?
  27. 27.Is 1/10 in its simplest form? (a) Yes (b) No
  28. 28.Write 9/12 in its simplest form. =
  29. 29.Is 30/35 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 63 and 90?
  31. 31.Write 12/32 in its simplest form. =
  32. 32.Write 72/80 in its simplest form. =
  33. 33.What is the HCF of 6 and 42?
  34. 34.What is the HCF of 8 and 20?
  35. 35.Write 4/10 in its simplest form. =
  36. 36.Is 10/25 in its simplest form? (a) Yes (b) No
  37. 37.Write 36/81 in its simplest form. =
  38. 38.Write 30/42 in its simplest form. =
  39. 39.Write 10/35 in its simplest form. =
  40. 40.Write 30/54 in its simplest form. =

Answer key

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

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