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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 396 · 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 3/21 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 45 and 63?
  3. 3.Write 36/45 in its simplest form. =
  4. 4.Write 35/50 in its simplest form. =
  5. 5.What is the HCF of 9 and 27?
  6. 6.What is the HCF of 18 and 45?
  7. 7.Is 20/24 in its simplest form? (a) Yes (b) No
  8. 8.Write 24/32 in its simplest form. =
  9. 9.Write 3/6 in its simplest form. =
  10. 10.What is the HCF of 63 and 90?
  11. 11.Write 12/15 in its simplest form. =
  12. 12.Write 3/18 in its simplest form. =
  13. 13.Is 18/24 in its simplest form? (a) Yes (b) No
  14. 14.Write 54/63 in its simplest form. =
  15. 15.What is the HCF of 3 and 30?
  16. 16.Is 7/10 in its simplest form? (a) No (b) Yes
  17. 17.Is 2/3 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 14 and 21?
  19. 19.Is 1/3 in its simplest form? (a) No (b) Yes
  20. 20.Write 56/72 in its simplest form. =
  21. 21.Write 12/32 in its simplest form. =
  22. 22.Write 56/80 in its simplest form. =
  23. 23.What is the HCF of 24 and 28?
  24. 24.What is the HCF of 24 and 30?
  25. 25.Write 6/18 in its simplest form. =
  26. 26.What is the HCF of 40 and 48?
  27. 27.Is 3/8 in its simplest form? (a) Yes (b) No
  28. 28.What is the HCF of 3 and 9?
  29. 29.Write 30/54 in its simplest form. =
  30. 30.Write 28/49 in its simplest form. =
  31. 31.What is the HCF of 6 and 36?
  32. 32.Write 4/14 in its simplest form. =
  33. 33.What is the HCF of 35 and 45?
  34. 34.Write 14/63 in its simplest form. =
  35. 35.Write 21/35 in its simplest form. =
  36. 36.Write 4/6 in its simplest form. =
  37. 37.What is the HCF of 40 and 56?
  38. 38.Write 8/12 in its simplest form. =
  39. 39.Is 12/15 in its simplest form? (a) Yes (b) No
  40. 40.Is 20/25 in its simplest form? (a) No (b) Yes

Answer key

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

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