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展开全部
3.7*6.5+3.5
=3.5*6.5+0.2*6.5+3.5
=3.5*7.5+1.3
=35*0.75+1.3
=35*3/4 +1.3
=105/4+1.3
=（25+1.25）+1.3
=26.25+1.3
=27.55
=3.5*6.5+0.2*6.5+3.5
=3.5*7.5+1.3
=35*0.75+1.3
=35*3/4 +1.3
=105/4+1.3
=（25+1.25）+1.3
=26.25+1.3
=27.55
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展开全部
27.55
解析：
3.7×6.5+3.5
=(4.0-0.3)×6.5+3.5
=26-1.95+3.5
=26.05-2+3.5
=24.05+3.5
=27.55
解析：
3.7×6.5+3.5
=(4.0-0.3)×6.5+3.5
=26-1.95+3.5
=26.05-2+3.5
=24.05+3.5
=27.55
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