Editing Positional notation (section)

=== Decimal system ===
{{Main|Decimal representation}}
In the [[decimal]] (base-10) [[Hindu–Arabic numeral system]], each position starting from the right is a higher power of 10. The first position represents [[1 E0|10<sup>0</sup>]] (1), the second position [[1 E1|10<sup>1</sup>]] (10), the third position [[1 E2|10<sup>2</sup>]] ({{nowrap|10 × 10}} or 100), the fourth position [[1000 (number)|10<sup>3</sup>]] ({{nowrap|10 × 10 × 10}} or 1000), and so on.

[[Decimal|Fraction]]al values are indicated by a [[Decimal separator|separator]], which can vary in different locations. Usually this separator is a period or [[full stop]], or a [[comma (punctuation)|comma]]. Digits to the right of it are multiplied by 10 raised to a negative power or exponent. The first position to the right of the separator indicates [[1 E-1|10<sup>−1</sup>]] (0.1), the second position [[1 E-2|10<sup>−2</sup>]] (0.01), and so on for each successive position.

As an example, the number 2674 in a base-10 numeral system is:
: (2 × 10<sup>3</sup>) + (6 × 10<sup>2</sup>) + (7 × 10<sup>1</sup>) + (4 × 10<sup>0</sup>)
or
: (2 × 1000) + (6 × 100) + (7 × 10) + (4 × 1).