National Wildfire Coordinating Group

1.14 Subtracting Fractions


Similar to adding fractions, fractions must have a common denominator (the bottom numbers must be the same) before being subtracted.

There are three steps to subtracting fractions:

  1. Ensure that the bottom numbers (denominators) are the same. If they are not, change them so that they are the same (they have a common denominator).
  2. Once the denominators are the same, subtract the top numbers (numerators) and place the result over the common denominator.
  3. Simplify the fraction (if possible).


Select the correct answer(s) from the questions below:

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