简便计算 12.35*0.62+3.8*1.235
问题描述:
简便计算 12.35*0.62+3.8*1.235
答
12.35*0.62+3.8*1.235
=1.235*6.2+3.8*1.235
=1.235x(6.2+3.8)
=1.235x10
=12.35