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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 790 · 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 16 and 36?
  2. 2.Write 9/45 in its simplest form. =
  3. 3.What is the HCF of 15 and 27?
  4. 4.Write 18/81 in its simplest form. =
  5. 5.Write 15/50 in its simplest form. =
  6. 6.What is the HCF of 18 and 63?
  7. 7.Write 45/81 in its simplest form. =
  8. 8.Write 10/15 in its simplest form. =
  9. 9.Write 2/4 in its simplest form. =
  10. 10.Write 72/80 in its simplest form. =
  11. 11.Is 4/5 in its simplest form? (a) No (b) Yes
  12. 12.Is 2/8 in its simplest form? (a) No (b) Yes
  13. 13.Write 49/63 in its simplest form. =
  14. 14.What is the HCF of 6 and 8?
  15. 15.Write 9/63 in its simplest form. =
  16. 16.What is the HCF of 7 and 21?
  17. 17.What is the HCF of 9 and 72?
  18. 18.What is the HCF of 2 and 16?
  19. 19.Is 7/10 in its simplest form? (a) Yes (b) No
  20. 20.What is the HCF of 12 and 30?
  21. 21.Write 6/20 in its simplest form. =
  22. 22.What is the HCF of 14 and 21?
  23. 23.Is 7/8 in its simplest form? (a) No (b) Yes
  24. 24.Write 56/64 in its simplest form. =
  25. 25.Write 9/36 in its simplest form. =
  26. 26.Is 12/21 in its simplest form? (a) Yes (b) No
  27. 27.Is 5/25 in its simplest form? (a) Yes (b) No
  28. 28.Write 2/18 in its simplest form. =
  29. 29.Is 4/6 in its simplest form? (a) No (b) Yes
  30. 30.Write 6/36 in its simplest form. =
  31. 31.Is 1/9 in its simplest form? (a) No (b) Yes
  32. 32.What is the HCF of 24 and 80?
  33. 33.What is the HCF of 16 and 40?
  34. 34.What is the HCF of 24 and 30?
  35. 35.What is the HCF of 16 and 18?
  36. 36.What is the HCF of 6 and 18?
  37. 37.Is 1/4 in its simplest form? (a) Yes (b) No
  38. 38.Is 10/35 in its simplest form? (a) Yes (b) No
  39. 39.Write 16/28 in its simplest form. =
  40. 40.Is 15/20 in its simplest form? (a) No (b) Yes

Answer key

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

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