Explanation:
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.^{ }
A decimal is a
tenth part, and decimals become a series of nested tenths
Decimal fractions
A decimal
fraction is a fraction whose denominator is a power of ten.
Decimal fractions are commonly expressed
without a denominator, the decimal
separator being inserted into the
numerator (with leading zeros added if needed) at the position from
the right corresponding to the power of ten of the denominator; e.g., 8/10,
83/100, 83/1000, and 8/10000 are expressed as 0.8, 0.83, 0.083, and 0.0008. (Our solved example in mathguru.com uses this concept)
In English-speaking and many Asian countries, a period (.)
or raised period (.) is used as the decimal separator; in many other
countries, a comma is used.
The integer part or integral part of a decimal
number is the part to the left of the decimal separator (see also truncation). The part from the decimal
separator to the right is the fractional part; if considered as a separate number, a zero is
often written in front. Especially for negative numbers, we have to distinguish
between the fractional part of the notation and the fractional part of the number
itself, because the latter gets its own decimal sign. It is usual for a decimal
number whose absolute value is less than one to have a leading zero.
http://en.wikipedia.org/wiki/Decimal
The above explanation is copied from
Wikipedia, the free encyclopedia and is remixed as allowed under the Creative
Commons Attribution- ShareAlike 3.0 Unported License.