4321乘1234减4322乘1233怎么简算

分类: 作业答案 • 2022-01-02 13:22:40

问题描述：

答

4321×1234-4321×1233-1233
=4321×（1234-1233）-1233
=4321-1233
=3088

答

将1233中的4-1到4321那 4322×(1234-1232)

答

4321*1234-(4321+1)*(1234-1)
=4321*1234-4321*1234+4321-1234+1
=4321-1234+1
=3087+1
=3088