4.25+2.67-0.67+5.75 要简便

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4.25+2.67-0.67+5.75要简便4.25+2.67-0.67+5.75要简便4.25+2.67-0.67+5.75要简便4.25+2.67-0.67+5.75=4.25+5.75+2.67

4.25+2.67-0.67+5.75 要简便
4.25+2.67-0.67+5.75 要简便

4.25+2.67-0.67+5.75 要简便
4.25+2.67-0.67+5.75
=4.25+5.75+2.67-0.67
=10+2
=12