72X99+73的简便运算

Question

如题所述

Answer 1

=72x99十72十1
=72x（99十1）十1
=7201

Answer 2

计算
72*99+73
=72*（99+1）+1
=7200+1
=7201

Answer 3

72X99+73=72*（100-1）+73=7201

Answer 4

72X99+72+1=72X（99+1）+1=72X100+1=7200+1=7201

Answer 5

=72×99+72+1
=72(99+1)+1
=72×100+1
=7200+1
=7201本回答被网友采纳