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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 312 · 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 72/80 in its simplest form. =
  2. 2.What is the HCF of 3 and 6?
  3. 3.Write 18/27 in its simplest form. =
  4. 4.What is the HCF of 18 and 63?
  5. 5.Is 4/20 in its simplest form? (a) No (b) Yes
  6. 6.Write 12/15 in its simplest form. =
  7. 7.Is 1/8 in its simplest form? (a) No (b) Yes
  8. 8.Write 5/35 in its simplest form. =
  9. 9.Write 9/12 in its simplest form. =
  10. 10.Is 6/7 in its simplest form? (a) Yes (b) No
  11. 11.What is the HCF of 20 and 25?
  12. 12.Write 12/40 in its simplest form. =
  13. 13.Write 21/35 in its simplest form. =
  14. 14.Write 15/24 in its simplest form. =
  15. 15.What is the HCF of 6 and 24?
  16. 16.What is the HCF of 15 and 50?
  17. 17.Write 8/72 in its simplest form. =
  18. 18.Is 18/60 in its simplest form? (a) No (b) Yes
  19. 19.What is the HCF of 20 and 24?
  20. 20.Is 7/10 in its simplest form? (a) Yes (b) No
  21. 21.Write 24/32 in its simplest form. =
  22. 22.Is 1/10 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 6 and 36?
  24. 24.Write 3/9 in its simplest form. =
  25. 25.Write 12/30 in its simplest form. =
  26. 26.Is 4/12 in its simplest form? (a) No (b) Yes
  27. 27.Write 32/40 in its simplest form. =
  28. 28.Is 20/35 in its simplest form? (a) Yes (b) No
  29. 29.Write 3/12 in its simplest form. =
  30. 30.Write 3/21 in its simplest form. =
  31. 31.Is 12/32 in its simplest form? (a) No (b) Yes
  32. 32.Is 5/9 in its simplest form? (a) No (b) Yes
  33. 33.Write 36/63 in its simplest form. =
  34. 34.Write 12/18 in its simplest form. =
  35. 35.Write 8/64 in its simplest form. =
  36. 36.What is the HCF of 28 and 49?
  37. 37.Write 14/49 in its simplest form. =
  38. 38.Write 6/21 in its simplest form. =
  39. 39.What is the HCF of 15 and 40?
  40. 40.Is 5/8 in its simplest form? (a) Yes (b) No

Answer key

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

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