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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 671 · 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 3/15 in its simplest form. =
  2. 2.Is 2/8 in its simplest form? (a) No (b) Yes
  3. 3.Write 30/35 in its simplest form. =
  4. 4.Is 5/9 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 12 and 16?
  6. 6.What is the HCF of 24 and 80?
  7. 7.Write 35/50 in its simplest form. =
  8. 8.Write 6/15 in its simplest form. =
  9. 9.Is 10/12 in its simplest form? (a) No (b) Yes
  10. 10.Write 16/72 in its simplest form. =
  11. 11.What is the HCF of 18 and 30?
  12. 12.Write 5/10 in its simplest form. =
  13. 13.Write 6/54 in its simplest form. =
  14. 14.Is 20/45 in its simplest form? (a) No (b) Yes
  15. 15.Write 6/36 in its simplest form. =
  16. 16.What is the HCF of 4 and 20?
  17. 17.Write 9/54 in its simplest form. =
  18. 18.Is 3/21 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 45 and 50?
  20. 20.Is 18/20 in its simplest form? (a) No (b) Yes
  21. 21.Is 12/40 in its simplest form? (a) Yes (b) No
  22. 22.Is 12/16 in its simplest form? (a) Yes (b) No
  23. 23.Is 2/20 in its simplest form? (a) No (b) Yes
  24. 24.Write 63/72 in its simplest form. =
  25. 25.Is 4/7 in its simplest form? (a) No (b) Yes
  26. 26.Is 25/45 in its simplest form? (a) Yes (b) No
  27. 27.Is 6/15 in its simplest form? (a) No (b) Yes
  28. 28.Is 30/36 in its simplest form? (a) Yes (b) No
  29. 29.Write 12/27 in its simplest form. =
  30. 30.What is the HCF of 16 and 20?
  31. 31.Write 56/80 in its simplest form. =
  32. 32.Write 7/21 in its simplest form. =
  33. 33.Write 4/24 in its simplest form. =
  34. 34.What is the HCF of 6 and 12?
  35. 35.Is 5/10 in its simplest form? (a) No (b) Yes
  36. 36.What is the HCF of 32 and 36?
  37. 37.What is the HCF of 21 and 35?
  38. 38.Write 12/20 in its simplest form. =
  39. 39.Write 7/63 in its simplest form. =
  40. 40.Write 5/15 in its simplest form. =

Answer key

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

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