What Is a Denary Number?

••• Chainarong Prasertthai/iStock/GettyImages

A denary number is a number in the base 10, or decimal, system. Most of the numbers used internationally are denary numbers, with a few exceptions possible in specific fields such as computer science.

Numerals

The base of a numeral system refers to the number of numerals that are used for expressing a number in that system. Denary numbers use 10 numerals. These are "0," "1," "2," "3," "4," "5," "6," "7," "8" and "9."

Place Value

Digits in denary numbers have a place value given by their position within the number. If there is no decimal point, the rightmost digit is in the "ones" place, which has the value of the digit times 10^0 (10 raised to the zeroth power, or 1)..

Fractional Values

Digits to the right of the decimal point in denary numbers show portions of a whole. The value of each digit is determined by its place. The value of the first digit to the right of the decimal point is the digit multiplied by 10^(-1), or 1/10. Each digit to the right of the decimal point has a value of the digit multiplied by 10^(-n), where "n" stands for the number of places to the right of the decimal point.

Identification

Base 10 is the common numeral system used internationally. Unless otherwise specified, a number can be assumed to be denary.

Other Base Systems

Besides base 10 numeral system, computer scientists may use base 2 (binary), base 8 (octal) and base 16 (hexadecimal) numeral systems.

Related Articles

How to Manipulate Roots & Exponents
How to Put Base Log on Graphing Calculator
What is the Identity Property of Multiplication?
How to Change 1/4 to a Decimal Form
How to Find the Mass Number of Bromine With 46 Neutrons
How to Do Titration Calculations
What Does YX Mean on a Calculator?
How to Find the Height of a Rectangular Pyramid
How to Understand Number Sets
How to Simplify Monomials
How to Find a Sales Trend Percent
How to Calculate the Volume of Water to Fill a Rectangular...
How to Get Rid of Cubed Power
How to Convert KPS to PSI
How to Divide Rational Numbers
How to Calculate Statistical Mean
How to Find a Fraction of a Number
How to Use Log on a TI-83
How to Convert Meter to Liter
How to Calculate the Volume of a Cylinder