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Simplest Form Fractions Worksheet

Fractions lesson 8: Simplest form of a fraction · Set 393 · 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 49/70 in its simplest form. =
  2. 2.Write 21/27 in its simplest form. =
  3. 3.What is the HCF of 10 and 25?
  4. 4.Is 5/6 in its simplest form? (a) Yes (b) No
  5. 5.What is the HCF of 8 and 24?
  6. 6.What is the HCF of 7 and 14?
  7. 7.Write 25/35 in its simplest form. =
  8. 8.Write 9/30 in its simplest form. =
  9. 9.Write 8/10 in its simplest form. =
  10. 10.Write 3/27 in its simplest form. =
  11. 11.Is 4/9 in its simplest form? (a) Yes (b) No
  12. 12.Write 35/40 in its simplest form. =
  13. 13.Write 16/36 in its simplest form. =
  14. 14.Write 8/48 in its simplest form. =
  15. 15.What is the HCF of 48 and 54?
  16. 16.What is the HCF of 54 and 63?
  17. 17.What is the HCF of 36 and 63?
  18. 18.What is the HCF of 21 and 35?
  19. 19.Write 45/72 in its simplest form. =
  20. 20.Is 3/10 in its simplest form? (a) No (b) Yes
  21. 21.Write 16/40 in its simplest form. =
  22. 22.Is 25/45 in its simplest form? (a) No (b) Yes
  23. 23.What is the HCF of 45 and 81?
  24. 24.Write 3/21 in its simplest form. =
  25. 25.Is 3/4 in its simplest form? (a) No (b) Yes
  26. 26.Is 2/5 in its simplest form? (a) Yes (b) No
  27. 27.What is the HCF of 3 and 24?
  28. 28.What is the HCF of 63 and 72?
  29. 29.Is 1/5 in its simplest form? (a) No (b) Yes
  30. 30.Write 21/30 in its simplest form. =
  31. 31.Is 4/18 in its simplest form? (a) Yes (b) No
  32. 32.Write 18/20 in its simplest form. =
  33. 33.Write 18/27 in its simplest form. =
  34. 34.Write 6/10 in its simplest form. =
  35. 35.What is the HCF of 21 and 30?
  36. 36.Write 4/8 in its simplest form. =
  37. 37.Write 6/42 in its simplest form. =
  38. 38.Write 2/20 in its simplest form. =
  39. 39.Write 4/14 in its simplest form. =
  40. 40.What is the HCF of 12 and 28?

Answer key

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

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