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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 119 · 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.What is the HCF of 10 and 35?
  2. 2.What is the HCF of 2 and 16?
  3. 3.What is the HCF of 45 and 54?
  4. 4.What is the HCF of 12 and 32?
  5. 5.Is 2/5 in its simplest form? (a) Yes (b) No
  6. 6.What is the HCF of 8 and 24?
  7. 7.Write 20/28 in its simplest form. =
  8. 8.Is 5/30 in its simplest form? (a) No (b) Yes
  9. 9.Write 3/15 in its simplest form. =
  10. 10.Is 15/21 in its simplest form? (a) No (b) Yes
  11. 11.What is the HCF of 20 and 28?
  12. 12.Write 10/15 in its simplest form. =
  13. 13.What is the HCF of 35 and 42?
  14. 14.Write 15/35 in its simplest form. =
  15. 15.Write 18/24 in its simplest form. =
  16. 16.Is 8/9 in its simplest form? (a) Yes (b) No
  17. 17.Write 9/81 in its simplest form. =
  18. 18.Is 3/8 in its simplest form? (a) Yes (b) No
  19. 19.Is 12/27 in its simplest form? (a) No (b) Yes
  20. 20.Is 20/32 in its simplest form? (a) Yes (b) No
  21. 21.Write 8/12 in its simplest form. =
  22. 22.What is the HCF of 9 and 36?
  23. 23.Write 2/20 in its simplest form. =
  24. 24.What is the HCF of 35 and 45?
  25. 25.Is 30/48 in its simplest form? (a) No (b) Yes
  26. 26.What is the HCF of 40 and 72?
  27. 27.Is 1/2 in its simplest form? (a) Yes (b) No
  28. 28.Write 3/6 in its simplest form. =
  29. 29.Write 4/6 in its simplest form. =
  30. 30.Write 81/90 in its simplest form. =
  31. 31.Write 8/32 in its simplest form. =
  32. 32.What is the HCF of 4 and 12?
  33. 33.Is 9/15 in its simplest form? (a) No (b) Yes
  34. 34.Write 14/63 in its simplest form. =
  35. 35.Is 2/9 in its simplest form? (a) No (b) Yes
  36. 36.Write 35/63 in its simplest form. =
  37. 37.Is 18/21 in its simplest form? (a) Yes (b) No
  38. 38.Write 36/63 in its simplest form. =
  39. 39.Write 3/21 in its simplest form. =
  40. 40.Is 15/27 in its simplest form? (a) No (b) Yes

Answer key

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

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