# Number - Decimal (Hindu–Arabic numeral system)

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## 1 - About

A decimal number is a number coming from the numeral system base 10.

The Hindu–Arabic numeral system, base-10, is the most commonly used system in the world today for most calculations.

The prefix deci- implies base 10.

Each consecutive digit is measured in units one tenth the size of the previous one.

The base-10 (decimal) system was motivated to count with fingers,

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