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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 64 · 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 6/60 in its simplest form? (a) Yes (b) No
  2. 2.What is the HCF of 16 and 40?
  3. 3.What is the HCF of 18 and 20?
  4. 4.Write 40/64 in its simplest form. =
  5. 5.Is 6/8 in its simplest form? (a) Yes (b) No
  6. 6.Write 7/35 in its simplest form. =
  7. 7.Write 20/36 in its simplest form. =
  8. 8.Write 56/64 in its simplest form. =
  9. 9.What is the HCF of 27 and 45?
  10. 10.Is 5/9 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 21 and 70?
  12. 12.Write 16/28 in its simplest form. =
  13. 13.Write 6/21 in its simplest form. =
  14. 14.Write 9/30 in its simplest form. =
  15. 15.Is 7/8 in its simplest form? (a) Yes (b) No
  16. 16.Write 6/12 in its simplest form. =
  17. 17.What is the HCF of 24 and 27?
  18. 18.Write 49/70 in its simplest form. =
  19. 19.Is 4/7 in its simplest form? (a) No (b) Yes
  20. 20.Is 7/9 in its simplest form? (a) Yes (b) No
  21. 21.Write 21/28 in its simplest form. =
  22. 22.Is 15/25 in its simplest form? (a) Yes (b) No
  23. 23.Write 7/63 in its simplest form. =
  24. 24.Is 12/18 in its simplest form? (a) Yes (b) No
  25. 25.Write 2/8 in its simplest form. =
  26. 26.What is the HCF of 25 and 35?
  27. 27.Write 15/18 in its simplest form. =
  28. 28.Is 9/12 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 9 and 63?
  30. 30.What is the HCF of 15 and 35?
  31. 31.Write 35/49 in its simplest form. =
  32. 32.Is 1/9 in its simplest form? (a) Yes (b) No
  33. 33.Write 16/40 in its simplest form. =
  34. 34.What is the HCF of 16 and 36?
  35. 35.Write 40/72 in its simplest form. =
  36. 36.Is 4/9 in its simplest form? (a) Yes (b) No
  37. 37.Write 72/81 in its simplest form. =
  38. 38.Write 15/27 in its simplest form. =
  39. 39.Write 30/36 in its simplest form. =
  40. 40.Is 1/2 in its simplest form? (a) Yes (b) No

Answer key

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

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