⑴ 25x32x12 怎么简便计算
简便计算25x32x12=25x32x4x3=(25x4)x(32x3)=100x96=9600
⑵ 26*32+39*12的简便计算方法
26×32+39×12简便计算方法
=13×64+13+36
=13×100
=1300