25×7×64简便算法
问题描述:
25×7×64简便算法
64×55×125
答
25X4X16X7=100X112=11200用简便算法=25x4x16x7=(25x4)x(16x7)=100x112=11200
25×7×64简便算法
64×55×125
25X4X16X7=100X112=11200用简便算法=25x4x16x7=(25x4)x(16x7)=100x112=11200