Many numeral systems of ancient civilizations use ten and its powers for representing numbers, possibly because there are ten fingers … See more

For writing numbers, the decimal system uses ten decimal digits, a decimal mark, and, for negative numbers, a minus sign "−". The decimal digits are 0, 1, 2, 3, 4, 5, 6, See more

For a real number x and an integer n ≥ 0, let [x]n denote the (finite) decimal expansion of the greatest number that is not greater than x that has exactly n digits after the decimal mark. Let di denote the last digit of [x]i. It is straightforward to see that [x]n may be … See more

Many ancient cultures calculated with numerals based on ten, perhaps because two human hands have ten fingers. Standardized weights used in the Indus Valley Civilisation (c. … See more

Decimal fractions (sometimes called decimal numbers, especially in contexts involving explicit fractions) are the rational numbers that may be expressed as a fraction whose denominator is a power of ten. For example, the decimal expressions See more

Most modern computer hardware and software systems commonly use a binary representation internally (although many early computers, such as the ENIAC or the See more

• Algorism
• Binary-coded decimal (BCD)
• Decimal classification
• Decimal computer
• Decimal time See more