第39页

信息发布者：
=11424
=15704
=40600
=4.9
=20.23
=4.67
$\begin{aligned} &518-184-116\\ =&518-(184+116)\\ =&518-300\\ =&218 \end{aligned}$
$\begin{aligned} &40×76×25\\ =&(40×25)×76\\ =&1000×76\\ =&76000 \end{aligned}$
$\begin{aligned} &99×99+99\\ =&99×(99+1)\\ =&99×100\\ =&9900 \end{aligned}$
上一页 下一页