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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 959 · 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 18/63 in its simplest form. =
  2. 2.Write 4/6 in its simplest form. =
  3. 3.Is 1/3 in its simplest form? (a) Yes (b) No
  4. 4.What is the HCF of 14 and 21?
  5. 5.Is 3/12 in its simplest form? (a) Yes (b) No
  6. 6.Is 1/2 in its simplest form? (a) Yes (b) No
  7. 7.What is the HCF of 18 and 30?
  8. 8.Is 4/5 in its simplest form? (a) No (b) Yes
  9. 9.Write 3/21 in its simplest form. =
  10. 10.Is 1/10 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 8 and 18?
  12. 12.Write 8/10 in its simplest form. =
  13. 13.Write 3/27 in its simplest form. =
  14. 14.What is the HCF of 2 and 14?
  15. 15.Write 18/42 in its simplest form. =
  16. 16.Write 12/18 in its simplest form. =
  17. 17.Is 3/7 in its simplest form? (a) No (b) Yes
  18. 18.Is 5/8 in its simplest form? (a) No (b) Yes
  19. 19.Write 24/32 in its simplest form. =
  20. 20.Is 42/54 in its simplest form? (a) Yes (b) No
  21. 21.Write 36/40 in its simplest form. =
  22. 22.Write 45/50 in its simplest form. =
  23. 23.Is 1/8 in its simplest form? (a) Yes (b) No
  24. 24.Is 6/60 in its simplest form? (a) No (b) Yes
  25. 25.Is 20/35 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 14 and 20?
  27. 27.Is 8/9 in its simplest form? (a) Yes (b) No
  28. 28.Write 27/72 in its simplest form. =
  29. 29.What is the HCF of 9 and 21?
  30. 30.What is the HCF of 6 and 9?
  31. 31.Is 28/36 in its simplest form? (a) Yes (b) No
  32. 32.Write 3/15 in its simplest form. =
  33. 33.Write 5/20 in its simplest form. =
  34. 34.Is 10/18 in its simplest form? (a) Yes (b) No
  35. 35.Write 24/27 in its simplest form. =
  36. 36.What is the HCF of 12 and 18?
  37. 37.Write 12/20 in its simplest form. =
  38. 38.Write 4/28 in its simplest form. =
  39. 39.What is the HCF of 9 and 63?
  40. 40.Is 1/9 in its simplest form? (a) Yes (b) No

Answer key

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

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