5个回答
展开全部
计算过程如下:
41.2*8.1+11*9.25+537*0.19
=41.2*8.1+53.7*1.9+11*9.25
=41.2*(10-1.9)+53.7*1.9+11*9.25
=41.2*10-(41.2-53.7)*1.9+11*9.25
=412+12.5*1.9+11*9.25
=412+(1.1+0.8)*12.5+1.1*92.5
=412+10+(12.5+92.5)*1.1
=422+(100+5)*1.1
=422+110+5.5
=537.5
混合运算:
如果一级运算和二级运算,同时有,先算二级运算。如果一级,二级,三级运算(即乘方、开方和对数运算)同时有,先算三级运算再算其他两级。
如果有括号,要先算括号里的数(不管它是什么级的,都要先算)。在括号里面,也要先算三级,然后到二级、一级。
展开全部
=41.2×10-41.2×1.9+11×9.25+53.7×1.9
=412-(53.7-41.2)×1.9+92.5+9.25+12.5×2-12.5×0.1
=412+92.5+9.25-1.25
=537.5
=412-(53.7-41.2)×1.9+92.5+9.25+12.5×2-12.5×0.1
=412+92.5+9.25-1.25
=537.5
2012-05-24
展开全部
41.2×8.1+11×9.25+537×0.19
=41.2×(10-1.9)+(10+1)×9.25+537×0.19
=412-41.2×1.9+92.5+9.25+53.7×1.9
=412+92.5+9.25+12.5×(2-0.1)
=412+92.5+9.25+25-1.25
=437+100.5
=537.5
=41.2×(10-1.9)+(10+1)×9.25+537×0.19
=412-41.2×1.9+92.5+9.25+53.7×1.9
=412+92.5+9.25+12.5×(2-0.1)
=412+92.5+9.25+25-1.25
=437+100.5
=537.5
展开全部
先乘后加就是简单算法。。
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