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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 202 · 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 21/30 in its simplest form. =
  2. 2.What is the HCF of 10 and 18?
  3. 3.Write 3/30 in its simplest form. =
  4. 4.Write 2/6 in its simplest form. =
  5. 5.Write 48/54 in its simplest form. =
  6. 6.Write 9/15 in its simplest form. =
  7. 7.Is 15/27 in its simplest form? (a) No (b) Yes
  8. 8.Write 40/72 in its simplest form. =
  9. 9.Is 4/5 in its simplest form? (a) Yes (b) No
  10. 10.What is the HCF of 9 and 54?
  11. 11.Is 3/8 in its simplest form? (a) No (b) Yes
  12. 12.Is 25/35 in its simplest form? (a) Yes (b) No
  13. 13.Write 7/28 in its simplest form. =
  14. 14.Write 18/63 in its simplest form. =
  15. 15.Is 3/21 in its simplest form? (a) Yes (b) No
  16. 16.What is the HCF of 3 and 24?
  17. 17.Write 3/18 in its simplest form. =
  18. 18.What is the HCF of 21 and 70?
  19. 19.Is 15/50 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 3 and 6?
  21. 21.Write 6/24 in its simplest form. =
  22. 22.Write 30/42 in its simplest form. =
  23. 23.Write 2/20 in its simplest form. =
  24. 24.Is 5/6 in its simplest form? (a) Yes (b) No
  25. 25.Is 12/32 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 8 and 10?
  27. 27.Write 24/28 in its simplest form. =
  28. 28.Write 20/45 in its simplest form. =
  29. 29.Write 6/10 in its simplest form. =
  30. 30.What is the HCF of 12 and 16?
  31. 31.Write 14/21 in its simplest form. =
  32. 32.What is the HCF of 12 and 18?
  33. 33.What is the HCF of 9 and 12?
  34. 34.Is 1/7 in its simplest form? (a) Yes (b) No
  35. 35.Is 35/45 in its simplest form? (a) No (b) Yes
  36. 36.Write 2/14 in its simplest form. =
  37. 37.Is 5/45 in its simplest form? (a) Yes (b) No
  38. 38.What is the HCF of 20 and 35?
  39. 39.What is the HCF of 45 and 72?
  40. 40.Write 16/28 in its simplest form. =

Answer key

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

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