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🧲 50의 6%랑 6의 50%가 같다고?
곱셈 교환법칙(n × m = m × n)을 활용하면 퍼센트 계산을 더 쉽게 할 수 있습니다. 즉, a × (b / 100) = b × (a / 100) 이므로, 숫자를 바꿔서 계산하면 더 빠를 수 있죠. 예를 들어 50의 6% 대신 6의 50%를 구하면, 50 × 0.06 대신 6 × 0.5 = 3이 되어 훨씬 간단합니다. 하지만 ...
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