0.37*99+0.37简便怎么算?顺便可以算的话算算1.23+3.77-0.56-1.44和3.14/0.4/2.5还有（5.28+2.28+5.28+5.28）*0.25!简便计算,脱式计算!请尽快回复,太急了~\(≧▽≦)/~

0.37*99+0.37简便怎么算?顺便可以算的话算算1.23+3.77-0.56-1.44和3.14/0.4/2.5还有（5.28+2.28+5.28+5.28）*0.25!简便计算,脱式计算!请尽快回复,太急了~\(≧▽≦)/~
0.37*99+0.37简便怎么算?
顺便可以算的话算算1.23+3.77-0.56-1.44和3.14/0.4/2.5还有（5.28+2.28+5.28+5.28）*0.25!简便计算,脱式计算!请尽快回复,太急了~\(≧▽≦)/~

0.37*99+0.37简便怎么算?顺便可以算的话算算1.23+3.77-0.56-1.44和3.14/0.4/2.5还有（5.28+2.28+5.28+5.28）*0.25!简便计算,脱式计算!请尽快回复,太急了~\(≧▽≦)/~
0.37*99+0.37
=0.37*（99+1）
=0.37*100
=37
1.23+3.77-0.56-1.44
=（1.23+3.77）-（0.56+1.44）
=5-2
=3
3.14/0.4/2.5
=3.14/(0.4*2.5)
=3.14/1
=3.14
（5.28+5.28+5.28+5.28）*0.25
=5.28×4×0.25
=5.28×1
=5.28

0.37*99+0.37 =0.37*(99+1)=37
1.23+3.77-0.56-1.44 = 5 -2 =3
3.14/0.4/2.5 = 3.14 / 1 =3.14
（5.28+2.28+5.28+5.28）*0.25=(5+2+5+5 + 0.28+ 0.28+ 0.28+ 0.28)/4=17/4 +0.28=4.25+0.28=4.53

0.37*(99+1)=0.37*100=37 结合律