蓝猫出题一条彩带,小强用去了全长的一半还多1米,小雨用去了剩下的一半还少1米,结果还剩5米。这条彩带长多少米?淘气出招像这种知道现在——倒过来推想——求原来的方法在数学上我们叫它倒推法,也叫还原法。这是一种非常重要的解决问题的策略,今天就和大家—起来研究倒推法在数学问题里的应用。伙伴出手 Blue cat out of a ribbon, Xiaoqiang spent more than half of the full length of more than 1 meter, spent less than half of the remaining rain with 1 meter less, the result remaining 5 meters. How long is this ribbon? Naughty moves like this know now - in turn, suppose - seeking the original method In mathematics we call it pushback method, also known as reduction method. This is a very important strategy to solve the problem. Let’s work with everyone today to study the application of the law of pushback in mathematics. Partner shot