如题所述
第1个回答 2020-03-11
简便计算
73x310+280x31
=73x310+28x310
=(73+28)x310
=101x310
=100x310+310
=31000+310
=31310本回答被网友采纳
73x310+280x31
=73x310+28x310
=(73+28)x310
=101x310
=100x310+310
=31000+310
=31310本回答被网友采纳
第2个回答 2020-03-11
简便计算过程方法如下
解:73x310+280x31
=73x310+28x310
=(73+28)x310
=101x310
=100x310+310
=31000+310
=31310
解:73x310+280x31
=73x310+28x310
=(73+28)x310
=101x310
=100x310+310
=31000+310
=31310