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The number line is a straight line that has an origin and stretches infinitly in two directions from its origin. An abscissa is a point on the number and can have a positive or negative value depending on its direction from the origin.

This animation represents values between -10 and 10.

**Click **the arrows to set the visible limits of the number line.

**Move **the markers on the line by moving the colored boxes above the line.

*Note: The number line expands or contracts to display decimal numbers between -10 and 10 on a maximum scale of 100 divisions.*

- To know how to represent decimal numbers on a number line.
- To know how to convert a decimal number to a fraction or a percentage.
- To know how to operations (addition, subtraction) with the help of a number line.

A decimal number is made up of a **whole number part** (the digit or digits before the decimal point) and a **decimal part** (the digit or digits aftert the decimal point). The decimal part is a fraction…