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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 624 · 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 12/14 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 7 and 28?
  3. 3.What is the HCF of 8 and 20?
  4. 4.Is 6/21 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 2 and 20?
  6. 6.Write 21/56 in its simplest form. =
  7. 7.What is the HCF of 21 and 49?
  8. 8.What is the HCF of 8 and 18?
  9. 9.What is the HCF of 35 and 45?
  10. 10.Is 7/10 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 6 and 9?
  12. 12.What is the HCF of 27 and 45?
  13. 13.Is 1/2 in its simplest form? (a) No (b) Yes
  14. 14.Write 18/63 in its simplest form. =
  15. 15.Write 6/9 in its simplest form. =
  16. 16.Write 2/4 in its simplest form. =
  17. 17.Is 2/4 in its simplest form? (a) No (b) Yes
  18. 18.Write 3/27 in its simplest form. =
  19. 19.Write 12/20 in its simplest form. =
  20. 20.What is the HCF of 81 and 90?
  21. 21.Is 12/42 in its simplest form? (a) No (b) Yes
  22. 22.Write 20/45 in its simplest form. =
  23. 23.Write 63/70 in its simplest form. =
  24. 24.What is the HCF of 45 and 72?
  25. 25.Write 9/36 in its simplest form. =
  26. 26.What is the HCF of 49 and 56?
  27. 27.Write 49/70 in its simplest form. =
  28. 28.Write 10/25 in its simplest form. =
  29. 29.Is 9/30 in its simplest form? (a) No (b) Yes
  30. 30.Is 5/7 in its simplest form? (a) Yes (b) No
  31. 31.What is the HCF of 10 and 18?
  32. 32.Is 1/9 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 18 and 63?
  34. 34.What is the HCF of 28 and 36?
  35. 35.Write 49/56 in its simplest form. =
  36. 36.Is 5/8 in its simplest form? (a) No (b) Yes
  37. 37.What is the HCF of 5 and 15?
  38. 38.What is the HCF of 8 and 64?
  39. 39.Is 20/35 in its simplest form? (a) No (b) Yes
  40. 40.What is the HCF of 5 and 45?

Answer key

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

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