555*125-355*126+355的简便运算

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/17 16:26:39

555*125-355*126+355的简便运算

555*125-355*126+355
=555*125-355*(126-1)
=555*125-355*125
=(555-355)*125
=200*125
=25000

555*125-355*126+355
=555*125-355*(125+1)+355
=555*125-355*125-1*355+355
=(555-355)*125
=200*125
=50000

=555*125-355*126+355*1
=555*125-355*(126-1)
=555*125-355*125
=(555-355)*125
=200*125
=25000