In a base-10 number system the decomposition of a number using power of ten.

### Example

The decimal expansion of the number 5027.3 is:

5027.3 = (5 × 10^{3}) + (0 × 10^{2}) + (2 × 10^{1}) + (7 × 10^{0}) + (3 × 10^{-1})

This expansion is also called the * expanded form* of the decimal number 5027.3.