如题所述
第1个回答 2020-04-17
9999乘1001
=9999乘(1000+1)
=9999乘1000+9999乘1
=9999000+9999
=10098999本回答被网友采纳
=9999乘(1000+1)
=9999乘1000+9999乘1
=9999000+9999
=10098999本回答被网友采纳
第2个回答 2017-12-29
9999x1001
=9999x1000+9999
=99990000+9999
=99999999
=9999x1000+9999
=99990000+9999
=99999999