The **decimal** numeral system (also called **base ten** or occasionally **denary**) has ten as its base. It is the numerical base most widely used by modern civilizations.

**Decimal notation** often refers to a base-10 positional notation such as the Hindu-Arabic numeral system; however, it can also be used more generally to refer to non-positional systems such as Roman or Chinese numerals which are also based on powers of ten.

**Decimals** also refer to decimal fractions, either separately or in contrast to vulgar fractions. In this context, a decimal is a tenth part, and decimals become a series of nested tenths. There was a notation in use like 'tenth-metre', meaning the tenth decimal of the metre, currently an Angstrom. The contrast here is between decimals and vulgar fractions, and decimal divisions and other divisions of measures, like the inch. It is possible to follow a decimal expansion with a vulgar fraction; this is done with the recent divisions of the troy ounce, which has three places of decimals, followed by a trinary place.

Read more about Decimal: Decimal Notation, Decimal Computation, History

### Other articles related to "decimal":

**Decimal**-fraction Equivalents: 0 To 1 By 64ths

... This is a list of

**decimal**-fraction equivalents, often called simply

**decimal**equivalents ... after the thousandths or ten-thousandths

**decimal**place are usually truncated or rounded for practical purposes 0.000 1.015 1..031 3..046 1..062 ...

... Pell's equation, a proof for the Pythagorean Theorem, computes π to 5

**decimal**places, and calculates the time taken for the earth to orbit the sun to 9

**decimal**places 14th ...

**Decimal**- History - Other Bases

... Some cultures do, or did, use other bases of numbers ... Pre-Columbian Mesoamerican cultures such as the Maya used a base-20 system (using all twenty fingers and toes) ...

... limiting the number of digits right of the

**decimal**point, by discarding the least significant ones. 32.438191288 −6.3444444444444 To truncate these numbers to 4

**decimal**digits, we only consider the 4 digits to the right of the

**decimal**point ...

... Academic grading in Mexico employs a

**decimal**system, from 0 to 10, to measure the students' scores ... Insufficient/Failed (deficiente/reprobado) Since

**decimal**fractions are common, a scale from 0 to 100 is often used to remove the

**decimal**point ... there must exist conversion rules to convert those grades to their equivalent in the

**decimal**system ...

### Famous quotes containing the word decimal:

“It makes little sense to spend a month teaching *decimal* fractions to fourth-grade pupils when they can be taught in a week, and better understood and retained, by sixth-grade students. Child-centeredness does not mean lack of rigor or standards; it does mean finding the best match between curricula and children’s developing interests and abilities.”

—David Elkind (20th century)