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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 491 · 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 5/9 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 20 and 32?
  3. 3.What is the HCF of 12 and 28?
  4. 4.Write 5/15 in its simplest form. =
  5. 5.Is 3/10 in its simplest form? (a) Yes (b) No
  6. 6.Write 20/32 in its simplest form. =
  7. 7.Write 21/24 in its simplest form. =
  8. 8.Write 6/10 in its simplest form. =
  9. 9.What is the HCF of 8 and 80?
  10. 10.Write 56/80 in its simplest form. =
  11. 11.Is 2/4 in its simplest form? (a) No (b) Yes
  12. 12.What is the HCF of 24 and 40?
  13. 13.Write 6/21 in its simplest form. =
  14. 14.Write 36/45 in its simplest form. =
  15. 15.Is 4/14 in its simplest form? (a) No (b) Yes
  16. 16.Is 35/40 in its simplest form? (a) No (b) Yes
  17. 17.Is 2/16 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 9 and 72?
  19. 19.Write 20/45 in its simplest form. =
  20. 20.Write 8/16 in its simplest form. =
  21. 21.Is 8/20 in its simplest form? (a) No (b) Yes
  22. 22.Is 3/12 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 3 and 27?
  24. 24.Is 3/4 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 2 and 14?
  26. 26.Write 9/63 in its simplest form. =
  27. 27.Is 3/8 in its simplest form? (a) No (b) Yes
  28. 28.What is the HCF of 16 and 40?
  29. 29.What is the HCF of 15 and 40?
  30. 30.Is 2/7 in its simplest form? (a) No (b) Yes
  31. 31.Write 5/25 in its simplest form. =
  32. 32.Write 40/64 in its simplest form. =
  33. 33.Is 1/6 in its simplest form? (a) No (b) Yes
  34. 34.Is 12/42 in its simplest form? (a) No (b) Yes
  35. 35.What is the HCF of 28 and 40?
  36. 36.Write 49/70 in its simplest form. =
  37. 37.Write 7/21 in its simplest form. =
  38. 38.Write 56/64 in its simplest form. =
  39. 39.Is 12/15 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 28 and 36?

Answer key

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

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