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6○6○6○6=1.
分析:由“6○6○6○6=1”很容易想到1×1=1,或1+0=1.并由此推出6÷6×(6÷6)=1,或者6÷6+(6-6)=1.
解答:解:6÷6×(6÷6)=1;
或:6÷6+(6-6)=1.
故答案為:÷,×,(÷)或÷,+,(-).
點評:此題注意加括號,不過還有其他的加法.
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