56×12·5×0·8用简便方法计算
问题描述：
56×12·5×0·8用简便方法计算
答
12.5×0.56×0.4×0.8×250
=（12.5×0.8）×（250×0.4）×0.56
=10×100×0.56
=1000×0.56
=560