4321乘1234减4322乘1233怎么简算

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4321乘1234减4322乘1233怎么简算4321乘1234减4322乘1233怎么简算4321乘1234减4322乘1233怎么简算4321*1234-(4321+1)*(1234-1)=432

4321乘1234减4322乘1233怎么简算
4321乘1234减4322乘1233怎么简算

4321乘1234减4322乘1233怎么简算
4321*1234-(4321+1)*(1234-1)
=4321*1234-4321*1234+4321-1234+1
=4321-1234+1
=3087+1
=3088

将1233中的4-1到4321那 4322×(1234-1232)

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