0.125+0.37+2.63怎么简便运算

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0.125+0.37+2.63怎么简便运算
0.125+0.37+2.63怎么简便运算

0.125+0.37+2.63怎么简便运算
0.125+0.37+2.63
=0.125+(0.37+2.63)
=0.125+3
=3.125

0.37+2.63=3
3+0.125=3.125

0.125+(0.37+2.63)=0.125+3=3.125