0.56x99=0.56x99+1-0.56=0.56x100-0.56=56-0.56=55.44
0.56×990.56x99+1-0.56=0.56x100-0.56=56-0.56=55.44分享评论踩
简便计算过程如下0.56×99=0.56×(100-1)=0.56×100-0.56×1=56-0.56=55.44望采纳
用乘法分配律简算原式=0.56×(100-1)=0.56×100-0.56×1=56-0.56=55.44