Number in which the whole part is separated from the decimal part by a decimal point.

Decimal numbers are real numbers written in decimal notation.

### Examples

- The expression \(\frac{2}{3}\) represents a real number where the whole part is 0 and the decimal part is 0.666 666 …
- The expression \(\frac{7}{4}\) represents a real number where the whole part is 1 and the decimal part is 0.75.
- The expression \(\frac{7}{3}\) represents a real number where the whole part is 2 and the decimal part is 0.333 333 …
- The expression \(\sqrt{5}\) represents a real number where the whole part is 2 and the decimal part is 0.236 067 …