decimal

Also known as base ten, denary, decimal numeral system, base 10, decimal system

thumb|upright=1.2|Place value of number in decimal system

AI overview

A decimal is a system for writing numbers that uses 10 as its base, with each position representing a power of 10 (like ones, tens, hundreds, and so on). It's the number system most people use in everyday life for counting, money, and measurements because it's straightforward and practical to work with.

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Commons category: Decimal numbers

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~21 min read

Article

14 sections

Contents

Origin
Decimal notation
Decimal fractions
Approximation using decimal numbers
Infinite decimal expansion
Rational numbers
Decimal computation
History
History of decimal fractions
Natural languages
Other bases
See also
Notes
References

thumb|upright=1.2|Place value of number in decimal system

The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the global standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (decimal fractions) of the Hindu–Arabic numeral system. The way of denoting numbers in the decimal system is often referred to as decimal notation.