41.2×8.1+11×9.25+537×0.19如何简便计算
41.2×8.1+11×9.25+537×0.19如何简便计算
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
41.2*8.1+11*9.25+537*0.19简便计算。
原式=41.2*8.1+11*（1.25+8）+（41.2+12.5）*1.9
=41.2*8.1+11*1.25+11*0.8+41.2*1.9+12.5*1.9
=41.2*（8.1+1.9）+12.5*（1.1+1.9）+11*8
=41.2*10+12.5*8+88
=412+37.5+88
=537.5
简便运算：41.2*8.1+11*9.25+537*0.19
如果是初中的话，应该是考因式展开公式的
原式=（41+0.2）*（8+0.1）+11*（9+0.25）+537*（0.2-0.01）
=328+4.1+1.6+0.02+99+2.75+107.4-5.37
=537.5
41.2*8.1+11*9.25+537*0.19的简便算发
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
祝你学习天天向上，加油！
41.2*8.1+11*9.25+537*0.19(要简便方法）
41.2×8.1＋11×9.25＋537×0.19
＝537.5
简算:41.2*8.1+11*9.25+537*0.19
原式=41.2*（10-1.9）+11*9.25+53.7*1.9=412+11*（10-0.75）+12.5*1.9=412+110-1.1*7.5+（20-7.5）*1.9=412+110+20*1.9-（1.1*7.5+1.9*7.5）=412+110+38-3*7.5=560-22.5=537.5
41.2乘8.1+11乘9.25+537乘0.19的简便演算法
就是把8.1 11 和 0.19拆分成为8+0.1，10+1和0.2-0.01
41.2*8.1+11*9.25+537*0.19 怎么简算
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
