354-79+29的简便运算怎么算
问题描述:
354-79+29的简便运算怎么算
答
354-(79-29)
=354-50
=304
答
354-79+29
=354-(79-29)
=354-50
=304
答
354-79+29
=354-(79-29)
=354-50
=304