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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 942 · 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 12/42 in its simplest form. =
  2. 2.Write 8/16 in its simplest form. =
  3. 3.What is the HCF of 32 and 40?
  4. 4.Write 6/9 in its simplest form. =
  5. 5.What is the HCF of 30 and 42?
  6. 6.What is the HCF of 20 and 36?
  7. 7.What is the HCF of 42 and 60?
  8. 8.What is the HCF of 20 and 25?
  9. 9.Is 12/18 in its simplest form? (a) Yes (b) No
  10. 10.Write 10/45 in its simplest form. =
  11. 11.What is the HCF of 28 and 35?
  12. 12.What is the HCF of 8 and 28?
  13. 13.Write 24/27 in its simplest form. =
  14. 14.What is the HCF of 10 and 18?
  15. 15.Write 16/40 in its simplest form. =
  16. 16.Is 5/7 in its simplest form? (a) No (b) Yes
  17. 17.Is 6/8 in its simplest form? (a) No (b) Yes
  18. 18.What is the HCF of 6 and 30?
  19. 19.Write 6/10 in its simplest form. =
  20. 20.Write 16/20 in its simplest form. =
  21. 21.Write 63/90 in its simplest form. =
  22. 22.What is the HCF of 9 and 15?
  23. 23.Is 8/12 in its simplest form? (a) No (b) Yes
  24. 24.What is the HCF of 15 and 18?
  25. 25.Is 3/7 in its simplest form? (a) Yes (b) No
  26. 26.What is the HCF of 81 and 90?
  27. 27.Write 18/48 in its simplest form. =
  28. 28.Write 56/64 in its simplest form. =
  29. 29.Write 54/60 in its simplest form. =
  30. 30.Is 6/7 in its simplest form? (a) No (b) Yes
  31. 31.Write 15/40 in its simplest form. =
  32. 32.Write 8/12 in its simplest form. =
  33. 33.What is the HCF of 48 and 54?
  34. 34.What is the HCF of 2 and 8?
  35. 35.What is the HCF of 56 and 80?
  36. 36.What is the HCF of 15 and 50?
  37. 37.Write 6/42 in its simplest form. =
  38. 38.Is 4/5 in its simplest form? (a) No (b) Yes
  39. 39.Is 1/7 in its simplest form? (a) No (b) Yes
  40. 40.Write 14/21 in its simplest form. =

Answer key

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

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