5.6×2.6+2.8×0.44的简便算法
问题描述:
5.6×2.6+2.8×0.44的简便算法
答
原式=5.6x2.6+2.8x2x0.22
=5.6x(2.6+0.22)
=5.6x2.82
=15.792