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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 176 · 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.Write 2/8 in its simplest form. =
  2. 2.Write 18/60 in its simplest form. =
  3. 3.Is 9/10 in its simplest form? (a) Yes (b) No
  4. 4.Is 5/20 in its simplest form? (a) No (b) Yes
  5. 5.What is the HCF of 5 and 10?
  6. 6.Write 81/90 in its simplest form. =
  7. 7.Write 12/27 in its simplest form. =
  8. 8.Write 35/45 in its simplest form. =
  9. 9.Write 42/48 in its simplest form. =
  10. 10.Write 9/18 in its simplest form. =
  11. 11.Is 3/18 in its simplest form? (a) Yes (b) No
  12. 12.What is the HCF of 16 and 40?
  13. 13.What is the HCF of 2 and 14?
  14. 14.Is 4/7 in its simplest form? (a) No (b) Yes
  15. 15.Write 10/25 in its simplest form. =
  16. 16.Is 5/8 in its simplest form? (a) No (b) Yes
  17. 17.Write 4/14 in its simplest form. =
  18. 18.Write 5/20 in its simplest form. =
  19. 19.What is the HCF of 54 and 63?
  20. 20.What is the HCF of 21 and 35?
  21. 21.Is 4/40 in its simplest form? (a) Yes (b) No
  22. 22.What is the HCF of 16 and 18?
  23. 23.Write 4/36 in its simplest form. =
  24. 24.Write 72/81 in its simplest form. =
  25. 25.What is the HCF of 15 and 20?
  26. 26.Write 10/18 in its simplest form. =
  27. 27.Is 1/3 in its simplest form? (a) No (b) Yes
  28. 28.Write 12/20 in its simplest form. =
  29. 29.Write 63/72 in its simplest form. =
  30. 30.Is 12/32 in its simplest form? (a) No (b) Yes
  31. 31.What is the HCF of 15 and 24?
  32. 32.Write 8/12 in its simplest form. =
  33. 33.Is 2/20 in its simplest form? (a) No (b) Yes
  34. 34.Is 6/10 in its simplest form? (a) Yes (b) No
  35. 35.Write 54/63 in its simplest form. =
  36. 36.Write 12/14 in its simplest form. =
  37. 37.Is 6/21 in its simplest form? (a) No (b) Yes
  38. 38.Is 8/9 in its simplest form? (a) No (b) Yes
  39. 39.Is 18/24 in its simplest form? (a) Yes (b) No
  40. 40.What is the HCF of 30 and 48?

Answer key

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

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