Denominator
The denominator of a fraction is the number under the horizontal bar, or vinculum. ![\[\frac{\text{Numerator}}{\text{Denominator}}\]](http://latex.artofproblemsolving.com/5/b/8/5b8958566dc7d3c70df5ccb970a7e0a741ce91c2.png)
It represents the amount of parts in an object.
A denominator is the divisor of a division problem. Because of this, the denominator can never be equal to zero. An expression such as 
, will be undefined, because the denominator equals 
.
As the denominator of a fraction gets smaller, the value of the fraction will get larger. Conversely, as the denominator of a fraction gets larger, the value of the fraction gets smaller.
If the absolute value of the denominator is greater than the absolute value of the numerator of a fraction, it is a proper fraction. If the absolute value of the denominator is less than the absolute value of the numerator, the fraction is an improper fraction.
See Also
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