Changes

==Etymology==

==Etymology==

French décimal, from Medieval Latin decimalis  of a tithe, from [[Latin]] decima tithe  

French décimal, from Medieval Latin decimalis  of a tithe, from [[Latin]] decima tithe  

*Date: [http://www.wikipedia.org/wiki/17th_Century 1608]

*Date: [https://www.wikipedia.org/wiki/17th_Century 1608]

==Definitions==

==Definitions==

*[[numbered]] or [[proceeding]] by tens:  

*[[numbered]] or [[proceeding]] by tens:  

:b : subdivided into 10th or 100th [[units]] <decimal coinage>  

:b : subdivided into 10th or 100th [[units]] <decimal coinage>  

==Description==

==Description==

The '''decimal''' [[numeral]] [[system]] (also called base ten or occasionally denary) has [http://en.wikipedia.org/wiki/10_(number) ten]  as its base. It is the numerical base most widely used by modern [[civilizations]].

The '''decimal''' [[numeral]] [[system]] (also called base ten or occasionally denary) has [https://en.wikipedia.org/wiki/10_(number) ten]  as its base. It is the numerical base most widely used by modern [[civilizations]].

Decimal notation often refers to the base-10 [http://en.wikipedia.org/wiki/Positional_notation positional notation] such as the [http://en.wikipedia.org/wiki/Hindu-Arabic_numeral_system Hindu-Arabic numeral system], however it can also be used more generally to refer to non-positional systems such as [http://en.wikipedia.org/wiki/Roman_numerals Roman] or [http://en.wikipedia.org/wiki/Chinese_numerals Chinese numerals] which are also based on powers of ten.

Decimal notation often refers to the base-10 [https://en.wikipedia.org/wiki/Positional_notation positional notation] such as the [https://en.wikipedia.org/wiki/Hindu-Arabic_numeral_system Hindu-Arabic numeral system], however it can also be used more generally to refer to non-positional systems such as [https://en.wikipedia.org/wiki/Roman_numerals Roman] or [https://en.wikipedia.org/wiki/Chinese_numerals Chinese numerals] which are also based on powers of ten.

In some [[contexts]], especially [[mathematics]] [[education]], the term decimal can refer specifically to decimal [[fractions]]. In such cases, a single decimal [[fraction]] is called a "decimal", and non-fractional [[numbers]], even when written in base 10, are not considered "decimals".

In some [[contexts]], especially [[mathematics]] [[education]], the term decimal can refer specifically to decimal [[fractions]]. In such cases, a single decimal [[fraction]] is called a "decimal", and non-fractional [[numbers]], even when written in base 10, are not considered "decimals".

==See also==

==See also==

*[http://en.wikipedia.org/wiki/Dewey_decimal Dewey Decimal System]

*[https://en.wikipedia.org/wiki/Dewey_decimal Dewey Decimal System]

[[Category: Mathematics]]

[[Category: Mathematics]]