12.5*(7.8*1.6+0.2*1.6)(简算)
问题描述:
12.5*(7.8*1.6+0.2*1.6)(简算)
答
12.5*(7.8*1.6+0.2*1.6)
=12.5*(7.8+0.2)*1.6
=12.5*8*1.6
=100*1.6
=160