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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 238 · 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 36/40 in its simplest form? (a) No (b) Yes
  2. 2.Is 1/7 in its simplest form? (a) Yes (b) No
  3. 3.Is 1/3 in its simplest form? (a) No (b) Yes
  4. 4.Is 5/10 in its simplest form? (a) No (b) Yes
  5. 5.Write 7/70 in its simplest form. =
  6. 6.What is the HCF of 20 and 35?
  7. 7.What is the HCF of 2 and 12?
  8. 8.Write 4/32 in its simplest form. =
  9. 9.Write 81/90 in its simplest form. =
  10. 10.Is 6/24 in its simplest form? (a) Yes (b) No
  11. 11.Write 9/72 in its simplest form. =
  12. 12.Is 27/30 in its simplest form? (a) Yes (b) No
  13. 13.Is 6/7 in its simplest form? (a) No (b) Yes
  14. 14.Write 63/81 in its simplest form. =
  15. 15.Write 12/27 in its simplest form. =
  16. 16.Is 5/8 in its simplest form? (a) Yes (b) No
  17. 17.Write 3/21 in its simplest form. =
  18. 18.Is 4/18 in its simplest form? (a) No (b) Yes
  19. 19.Is 36/42 in its simplest form? (a) No (b) Yes
  20. 20.Is 2/14 in its simplest form? (a) No (b) Yes
  21. 21.What is the HCF of 8 and 28?
  22. 22.Is 28/40 in its simplest form? (a) Yes (b) No
  23. 23.Write 36/81 in its simplest form. =
  24. 24.Is 7/10 in its simplest form? (a) No (b) Yes
  25. 25.What is the HCF of 18 and 42?
  26. 26.What is the HCF of 15 and 21?
  27. 27.Write 36/45 in its simplest form. =
  28. 28.Is 18/30 in its simplest form? (a) No (b) Yes
  29. 29.What is the HCF of 12 and 32?
  30. 30.What is the HCF of 10 and 16?
  31. 31.What is the HCF of 28 and 49?
  32. 32.What is the HCF of 14 and 18?
  33. 33.Is 45/50 in its simplest form? (a) No (b) Yes
  34. 34.What is the HCF of 15 and 27?
  35. 35.What is the HCF of 27 and 36?
  36. 36.Write 54/63 in its simplest form. =
  37. 37.What is the HCF of 40 and 72?
  38. 38.What is the HCF of 6 and 54?
  39. 39.Is 5/6 in its simplest form? (a) No (b) Yes
  40. 40.Write 2/16 in its simplest form. =

Answer key

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

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