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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 139 · 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 36/45 in its simplest form. =
  2. 2.Is 30/36 in its simplest form? (a) Yes (b) No
  3. 3.What is the HCF of 72 and 81?
  4. 4.Is 2/16 in its simplest form? (a) No (b) Yes
  5. 5.Write 7/14 in its simplest form. =
  6. 6.Is 5/6 in its simplest form? (a) No (b) Yes
  7. 7.Write 8/20 in its simplest form. =
  8. 8.Is 6/60 in its simplest form? (a) Yes (b) No
  9. 9.Write 5/40 in its simplest form. =
  10. 10.Write 24/80 in its simplest form. =
  11. 11.Is 6/54 in its simplest form? (a) Yes (b) No
  12. 12.Write 18/30 in its simplest form. =
  13. 13.Is 1/8 in its simplest form? (a) Yes (b) No
  14. 14.Write 16/40 in its simplest form. =
  15. 15.Is 12/32 in its simplest form? (a) Yes (b) No
  16. 16.Write 30/42 in its simplest form. =
  17. 17.Is 7/9 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 40 and 72?
  19. 19.Write 24/64 in its simplest form. =
  20. 20.Write 21/70 in its simplest form. =
  21. 21.What is the HCF of 35 and 63?
  22. 22.What is the HCF of 81 and 90?
  23. 23.Write 2/6 in its simplest form. =
  24. 24.What is the HCF of 21 and 24?
  25. 25.What is the HCF of 7 and 42?
  26. 26.Write 12/21 in its simplest form. =
  27. 27.Is 10/45 in its simplest form? (a) No (b) Yes
  28. 28.Write 27/63 in its simplest form. =
  29. 29.What is the HCF of 7 and 49?
  30. 30.Is 6/7 in its simplest form? (a) Yes (b) No
  31. 31.Write 8/80 in its simplest form. =
  32. 32.Is 1/5 in its simplest form? (a) No (b) Yes
  33. 33.What is the HCF of 63 and 72?
  34. 34.What is the HCF of 42 and 49?
  35. 35.Is 1/3 in its simplest form? (a) Yes (b) No
  36. 36.Write 15/40 in its simplest form. =
  37. 37.Is 8/20 in its simplest form? (a) No (b) Yes
  38. 38.Write 56/64 in its simplest form. =
  39. 39.Is 12/15 in its simplest form? (a) Yes (b) No
  40. 40.Is 4/7 in its simplest form? (a) Yes (b) No

Answer key

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

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