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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 84 · 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 6/12 in its simplest form. =
  2. 2.Write 28/32 in its simplest form. =
  3. 3.Write 9/15 in its simplest form. =
  4. 4.Write 18/45 in its simplest form. =
  5. 5.What is the HCF of 49 and 63?
  6. 6.Is 5/25 in its simplest form? (a) Yes (b) No
  7. 7.Write 18/24 in its simplest form. =
  8. 8.Write 35/50 in its simplest form. =
  9. 9.What is the HCF of 24 and 80?
  10. 10.Is 6/7 in its simplest form? (a) Yes (b) No
  11. 11.Write 27/30 in its simplest form. =
  12. 12.Is 3/4 in its simplest form? (a) Yes (b) No
  13. 13.Write 3/21 in its simplest form. =
  14. 14.What is the HCF of 6 and 12?
  15. 15.What is the HCF of 2 and 20?
  16. 16.Write 14/16 in its simplest form. =
  17. 17.Is 7/10 in its simplest form? (a) No (b) Yes
  18. 18.Write 4/28 in its simplest form. =
  19. 19.What is the HCF of 45 and 72?
  20. 20.Is 25/35 in its simplest form? (a) Yes (b) No
  21. 21.Write 30/35 in its simplest form. =
  22. 22.Is 2/18 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 14 and 16?
  24. 24.What is the HCF of 28 and 35?
  25. 25.What is the HCF of 15 and 40?
  26. 26.Write 8/36 in its simplest form. =
  27. 27.Write 6/27 in its simplest form. =
  28. 28.Is 4/40 in its simplest form? (a) No (b) Yes
  29. 29.Write 5/40 in its simplest form. =
  30. 30.Write 20/36 in its simplest form. =
  31. 31.Write 15/18 in its simplest form. =
  32. 32.Is 5/50 in its simplest form? (a) Yes (b) No
  33. 33.What is the HCF of 5 and 50?
  34. 34.Write 10/15 in its simplest form. =
  35. 35.What is the HCF of 63 and 90?
  36. 36.Is 15/24 in its simplest form? (a) No (b) Yes
  37. 37.Is 10/12 in its simplest form? (a) No (b) Yes
  38. 38.What is the HCF of 9 and 81?
  39. 39.What is the HCF of 20 and 24?
  40. 40.Write 2/20 in its simplest form. =

Answer key

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

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