55x55/56=?的简便算法?
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/14 20:10:27
![55x55/56=?的简便算法?](/uploads/image/z/74344-40-4.jpg?t=55x55%2F56%3D%3F%E7%9A%84%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%3F)
55x55/56=?的简便算法?
55x55/56=?的简便算法?
55x55/56=?的简便算法?
55×55/56
=(56-1)×55/56
=56×55/56-1×55/56
=55-55/56
=54又1/56
=(55*55-1+1)/56
=(55+1)(55-1)/56 + 1/56
=54又56分之1
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/14 20:10:27
55x55/56=?的简便算法?
55x55/56=?的简便算法?
55x55/56=?的简便算法?
55×55/56
=(56-1)×55/56
=56×55/56-1×55/56
=55-55/56
=54又1/56
=(55*55-1+1)/56
=(55+1)(55-1)/56 + 1/56
=54又56分之1