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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 121 · 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 28 and 32?
  2. 2.Write 21/35 in its simplest form. =
  3. 3.What is the HCF of 8 and 18?
  4. 4.What is the HCF of 12 and 42?
  5. 5.Write 6/14 in its simplest form. =
  6. 6.Write 54/63 in its simplest form. =
  7. 7.Write 9/21 in its simplest form. =
  8. 8.Is 1/3 in its simplest form? (a) No (b) Yes
  9. 9.Is 24/54 in its simplest form? (a) No (b) Yes
  10. 10.What is the HCF of 4 and 18?
  11. 11.What is the HCF of 6 and 12?
  12. 12.Write 8/36 in its simplest form. =
  13. 13.Is 30/42 in its simplest form? (a) Yes (b) No
  14. 14.What is the HCF of 25 and 30?
  15. 15.Is 18/30 in its simplest form? (a) No (b) Yes
  16. 16.Is 6/54 in its simplest form? (a) No (b) Yes
  17. 17.Write 12/54 in its simplest form. =
  18. 18.Is 3/6 in its simplest form? (a) No (b) Yes
  19. 19.Write 3/21 in its simplest form. =
  20. 20.Write 10/16 in its simplest form. =
  21. 21.What is the HCF of 10 and 45?
  22. 22.Write 18/48 in its simplest form. =
  23. 23.Is 12/27 in its simplest form? (a) Yes (b) No
  24. 24.Is 20/45 in its simplest form? (a) Yes (b) No
  25. 25.What is the HCF of 24 and 54?
  26. 26.Write 36/42 in its simplest form. =
  27. 27.Write 8/28 in its simplest form. =
  28. 28.What is the HCF of 18 and 30?
  29. 29.Write 15/35 in its simplest form. =
  30. 30.Write 18/27 in its simplest form. =
  31. 31.Write 30/42 in its simplest form. =
  32. 32.What is the HCF of 6 and 15?
  33. 33.Write 5/25 in its simplest form. =
  34. 34.What is the HCF of 15 and 50?
  35. 35.Write 30/48 in its simplest form. =
  36. 36.Is 30/36 in its simplest form? (a) No (b) Yes
  37. 37.Is 30/48 in its simplest form? (a) No (b) Yes
  38. 38.Is 2/18 in its simplest form? (a) No (b) Yes
  39. 39.Write 7/70 in its simplest form. =
  40. 40.Write 3/15 in its simplest form. =

Answer key

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

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