수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] 분수의 나눗셈

K-RIEMANN 2019.10.30 06:39 조회 790

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

1번계산.1/3÷5=5/15÷5=1/15이고,

2번계산.1/3÷5=1/(3×5)=1/15로 앞 계산과 답이 같다.

1번계산은 통분해 나누었고, 2번계산은 분모에 곱했는데 왜 답이 같은지 설명하라.

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