6.25x0.16+3.7x0.84+25.5x0.084的简便运算法怎么写

日期：2016-05-12 19:27:52 人气：1

6.25x0.16+3.7x0.84+25.5x0.084 =6.25x0.16+0.84x(3.7+2.55) =6.25x0.16+0.84x6.25 =6.25x(0.16+0.84) =6.25