0.125+0.37+2.63怎么简便运算
问题描述：
0.125+0.37+2.63怎么简便运算
答
0.125+(0.37+2.63)=0.125+3=3.125
答
0.37+2.63=3
3+0.125=3.125
答
0.125+0.37+2.63
=0.125+(0.37+2.63)
=0.125+3
=3.125