## What is half of 23?

**Half of 23 is 11 1/2.**

## Half of a Number and Number Lines

Half of a number *x* is equal to the number, *y*, that is the same distance from *x* on the number line that it is from 0 on the number line.

In other words, it is the midpoint of a number line segment with endpoints 0 and *x*. We can use this fact to find half of a number using number lines.