主题: 9÷3(1+2)
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旧 Jun 19th, 2011, 11:32     #4
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作者: hi13579 查看帖子
9÷3(1+2) = 1 or 9 ? ?好像都有道理。怎么可能都有道理呢

9 ÷ 3 X ( 1 + 2 ) 就这个还有什么可疑问的! 不就是等于 9 嘛 !

来教教你们这些受过高等教育的人一些小学简单算数。 算数的规则:先括号内再括号外、先乘除后加减、先前边再后边。
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