计算：0.123×958958+877×613.613-34.5×1231.23（）A．613613B．6136.13C．61361.3D．以上答案都不对

Question

计算：0.123×958958+877×613.613-34.5×1231.23（　　）

A．613613
B．6136.13
C．61361.3
D．以上答案都不对

Answer 1

0.123×958958+877×613.613-34.5×1231.23
=0.123×1001×958+877×613×1.001-34.5×123×10.01
=123×1001×0.958+877×0.613×1001-0.345×123×1001
=1001×123×（0.958-0.345）+877×0.613×1001
=1001×0.613×（123+877）
=1001×1000×0.613
=613613
故选：A．