Q:

# What is the top number of a fraction called?

A:

The top number in a fraction is called a numerator. The bottom number is called a denominator. The line that separates them can be horizontal or vertical.

## Keep Learning

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The numerator represents the number of parts and the denominator represents how many parts consist of the whole. It is possible for the numerator to be larger than the denominator, but fractions that represent a value of greater than one are "improper." When the numerator exceeds the denominator the fraction needs to be broken down further.

The denominator of a fraction can never be zero. However, a numerator can be zero and the resulting calculation returns a value of zero.

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## Related Questions

• A:

In fractional math, a numerator is the top number in a fraction, and the denominator is the bottom number. In the fraction one-half, for instance, one is the numerator, and two is the denominator.

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Rational numbers are any numbers that can be expressed by a fraction with integers in both the numerator and the denominator. The amount of time and paper it takes to put them into an increasing line depends on how many numbers there are and how big of a range they have.

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Improper fractions are those in which the numerator (top number) is larger than the denominator (bottom number). According to Math is Fun, improper fractions are better for use in mathematical formulae, but mixed fractions are better for understanding and spoken language. When dealing with formulae or math operations, wait until you have made all the other manipulations before converting a fraction to a mixed number for your final answer.