更新时间2021-07-10 08:23:05
简便计算怎么做?
101x45x2
=101x(45x2)
=101x90
=101x9x10
=909x10
=9090
101x45x2
=101x(45x2)
=101x90
=101x9x10
=909x10
=9090
用结合律
101×45×2
=101×(45×2)
=101×90
=9090
101x45x2
=101x(45x2)
=101x90
=101x9x10
=909x10
=9090
101*(45*2)
=101*90
=101*9*10
=909*10
=9090
101×45×2
=(100+1)×45×2
=(100+1)×90
=90×100+90×1
=9000+90
=9090
101×45×2