83*102-3*83的简便运算
第1个回答 2016-03-19
83x102-3x83(提取公因数83得:
=83x(102-3)(把-3分解成-2和-1得:
=83x(102-2-1)(括号内整理得:
=83x(100-1)(用分配律去括号得:
=8300-83
=8217
=83x(102-3)(把-3分解成-2和-1得:
=83x(102-2-1)(括号内整理得:
=83x(100-1)(用分配律去括号得:
=8300-83
=8217
第2个回答 2016-03-19
83*102-3*83
=83*(102-2)+83
=83*100+83
=8300+83
=8383本回答被网友采纳
=83*(102-2)+83
=83*100+83
=8300+83
=8383本回答被网友采纳