简便运算:58-92+42-8

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/01 16:52:17

简便运算:58-92+42-8
简便运算:58-92+42-8

简便运算:58-92+42-8
= (58+42)-(92+8)
=100-100
=0

58-92+42-8
=58-8+42-92
=92-92
=0

简便运算:
58-92+42-8
=(58-8)-(92-42)
=50-50
=0

58-92+42-8
=(58+42)-(92+8)
=100-100
=0