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정의
각 자릿값이 바로 아래 자릿값의 10배인 기수 10 체계로, 미터법의 수학적 기반이 된다.
설명
The decimal system uses ten digits (0–9) and positional notation: in 1,234.56, the '1' represents 1,000, '2' represents 200, '3' represents 30, '4' represents 4, '5' represents 0.5, and '6' represents 0.06. Metric prefixes exploit this structure — kilo (×1,000), hecto (×100), deca (×10), deci (÷10), centi (÷100), milli (÷1,000) — making unit conversion as simple as moving a decimal point.
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