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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 433 · 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.What is the HCF of 12 and 32?
  2. 2.Write 27/63 in its simplest form. =
  3. 3.Is 2/3 in its simplest form? (a) Yes (b) No
  4. 4.Is 9/24 in its simplest form? (a) No (b) Yes
  5. 5.Write 16/20 in its simplest form. =
  6. 6.What is the HCF of 16 and 72?
  7. 7.Is 2/20 in its simplest form? (a) No (b) Yes
  8. 8.Is 2/4 in its simplest form? (a) No (b) Yes
  9. 9.Write 9/72 in its simplest form. =
  10. 10.What is the HCF of 32 and 36?
  11. 11.Write 18/21 in its simplest form. =
  12. 12.Is 2/16 in its simplest form? (a) Yes (b) No
  13. 13.Write 2/16 in its simplest form. =
  14. 14.Write 5/15 in its simplest form. =
  15. 15.Write 28/32 in its simplest form. =
  16. 16.Write 21/70 in its simplest form. =
  17. 17.Write 12/14 in its simplest form. =
  18. 18.Is 3/12 in its simplest form? (a) Yes (b) No
  19. 19.What is the HCF of 24 and 64?
  20. 20.Write 18/60 in its simplest form. =
  21. 21.What is the HCF of 2 and 20?
  22. 22.Is 6/9 in its simplest form? (a) Yes (b) No
  23. 23.Write 5/45 in its simplest form. =
  24. 24.Is 12/54 in its simplest form? (a) Yes (b) No
  25. 25.Write 9/36 in its simplest form. =
  26. 26.Write 20/45 in its simplest form. =
  27. 27.Is 3/27 in its simplest form? (a) No (b) Yes
  28. 28.Write 8/56 in its simplest form. =
  29. 29.Write 9/21 in its simplest form. =
  30. 30.What is the HCF of 45 and 72?
  31. 31.Write 7/35 in its simplest form. =
  32. 32.What is the HCF of 8 and 28?
  33. 33.Write 15/25 in its simplest form. =
  34. 34.What is the HCF of 54 and 63?
  35. 35.Write 2/10 in its simplest form. =
  36. 36.Write 21/27 in its simplest form. =
  37. 37.What is the HCF of 10 and 14?
  38. 38.Is 9/10 in its simplest form? (a) Yes (b) No
  39. 39.What is the HCF of 18 and 45?
  40. 40.What is the HCF of 25 and 45?

Answer key

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

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