问大家几道简便运算的题该怎么做?121X27+121X60+121x16+79x91+12x79
网友回答
121X27+121X60+121x16+79x91+12x79
=121×(27+60+16)+79×(91+12)
=121×103+79×103
=103×(121+79)
=103×200
=20600
======以下答案可供参考======
供参考答案1:
121X27+121X60+121x16+79x91+12x79
=121(27+60+16)+79(91+12)=121*103+79*103=103(121+79)=103*200=20600