1003*997的简便运算

分类: 作业答案 • 2022-01-02 13:27:46

问题描述：

1003*997的简便运算

答

= (1000+3)(1000-3)
= 1000^2 - 3^2
= 1000000 - 9
= 999991

答

=(1000+3)*(1000-3)
=1000^2-9
=1000000-9
=999991

答

=(1000+3)(1000-3)
=1000000-9
=999991

答

=(1000+3)(1000-3)=1000^2-3^2=1000000-9=9999991