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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 100 · 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 7/70 in its simplest form. =
  2. 2.Write 9/81 in its simplest form. =
  3. 3.Is 6/7 in its simplest form? (a) Yes (b) No
  4. 4.Write 15/27 in its simplest form. =
  5. 5.Is 1/4 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 14 and 35?
  7. 7.What is the HCF of 30 and 36?
  8. 8.What is the HCF of 25 and 40?
  9. 9.Is 4/20 in its simplest form? (a) Yes (b) No
  10. 10.Is 5/7 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 16 and 28?
  12. 12.Write 4/12 in its simplest form. =
  13. 13.What is the HCF of 30 and 42?
  14. 14.Write 6/36 in its simplest form. =
  15. 15.Write 27/63 in its simplest form. =
  16. 16.Write 18/63 in its simplest form. =
  17. 17.What is the HCF of 5 and 25?
  18. 18.Is 6/12 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 42 and 60?
  20. 20.What is the HCF of 2 and 12?
  21. 21.What is the HCF of 14 and 21?
  22. 22.Is 4/40 in its simplest form? (a) Yes (b) No
  23. 23.What is the HCF of 81 and 90?
  24. 24.What is the HCF of 5 and 15?
  25. 25.Is 2/7 in its simplest form? (a) No (b) Yes
  26. 26.Write 28/35 in its simplest form. =
  27. 27.Is 25/35 in its simplest form? (a) Yes (b) No
  28. 28.Write 18/60 in its simplest form. =
  29. 29.Is 9/21 in its simplest form? (a) No (b) Yes
  30. 30.What is the HCF of 40 and 56?
  31. 31.Write 4/8 in its simplest form. =
  32. 32.What is the HCF of 6 and 10?
  33. 33.Write 24/42 in its simplest form. =
  34. 34.What is the HCF of 27 and 36?
  35. 35.Write 2/18 in its simplest form. =
  36. 36.Write 3/24 in its simplest form. =
  37. 37.Write 16/18 in its simplest form. =
  38. 38.What is the HCF of 40 and 48?
  39. 39.Is 1/9 in its simplest form? (a) No (b) Yes
  40. 40.Is 4/6 in its simplest form? (a) Yes (b) No

Answer key

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

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