126乘以456等于几?

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/10/01 23:24:06

126乘以456等于几?

126X456
=(125+1)(400+50+6)
=125X400+125X50+125X6+400+50+6
=50000+6250+750+456
=56250+1206
=57456

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