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Simplest Form Fractions Worksheet

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

Answer key

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

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