0.75+1.25×0.2+0.8 3.51-1.05-1.95 36.78-0.57*5-1.15简便计算
问题描述：
0.75+1.25×0.2+0.8 3.51-1.05-1.95 36.78-0.57*5-1.15简便计算
答
0.75+1.25×0.2+0.8
=0.75+0.25+0.8
=1+0.8
=1.8
3.51-1.05-1.95
=3.51-（1.05+1.95）
=3.51-3
=0.51
36.78-0.57*5-1.15
=36.78-2.85-1.15
=36.78-（2.85+1.15）
=36.78-4
=32.78