This gives the number's distance from zero on the real number line.

Likewise all the other whole numbers are defined by their places in a structure, the number line.

Numbers can also be visualized as points on a number line.

Psychological studies show that numbers are thought of as existing along a mental number line.

A typical positive/negative number line spans from -20 to 20.

Negative numbers are left of zero on a number line.

One way to think of negative numbers is using a number line.

Draw a number line like the one above and use it to answer the questions, starting from zero each time.

It may be thought of as the number's distance from zero on the real number line.

The most popular coordinate systems are the number line and the angle.