124x45x24，如何简便计算？
第1个回答 2020-04-11
原式=（125-1）x45x24
=125x24x45-45x24
=125x4x6x45-45x4x6
=500x6x45-180x6
=3000x45-1080
=135000-1080
=133920本回答被网友采纳
=125x24x45-45x24
=125x4x6x45-45x4x6
=500x6x45-180x6
=3000x45-1080
=135000-1080
=133920本回答被网友采纳
第2个回答 2020-03-03
