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83十83x99用简便方法计算
更新时间： 2020-07-09 00:00:00  

根据乘法结合率，八十三加八十三乘九十九等于八十三乘一加八十三乘九十九。八十三乘一加八十一乘九十九等于一加九十九再乘八十三。一加九十九等于一百。一百乘八十三等于八千三百，则八十三加八十三乘九十九等于八千三百。乘法结合律是两个数的和同一个数相乘，等于把两个加数分别同这个数相乘，再把两个积加起来，和不变。

关键词： 83x99 简便 方法 计算

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