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수학동아 - 폴리매스
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단원 별 수행평가
실생활에서 수학이 어떻게 활용되는지 확인해 보세요!
[수와 연산] 진법의 발견
수학동아 2018.12.28 02:14 조회 1316
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일, 십, 백, 천, … 우리가 사용하는 수는 10이 될 때마다 묶어서 한 자리씩 올린다. 그러나 5가 될 때마다 한 자리 올리는 수를 쓰던 곳도 있고 20이 될 때마다 한 자리 올리는 수를 쓰던 곳도 있다. 또 숫자의 모양도 각양각색이었다. 지금 우리가 사용하는 인도-아라비아 숫자가 수 세계를 평정하기까지 어떤 일이 있었을까?

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#진법 #수메르인 #60진법 #바빌로니아인 #셈돌 #인도-아라비아십진법 #주판
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