Denary

Denary (or base-10) is a representation of numbers using only 10 symbols: zero, one, two, three, four, five, six, seven, eight and nine.

10^2	10^1	10^0
100	10	1

Using the above table, you can represent any number in Denary. For example 201:

100	10	1
2	0	1

(100 * 2) + (10 * 0) + (1 * 1) = 201