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0.75×2.5+0.085×75-7.5×0.1=________.

7.5
分析:依据积不变性质,把原题中的0.085×75化为8.5×0.75,7.5×0.1化为0.75×1,再运用乘法分配律解答.
解答:0.75×2.5+0.085×75-7.5×0.1,
=0.75×2.5+8.5×0.75-0.75×1,
=(2.5+8.5-1)×0.75,
=10×0.75,
=7.5;
故答案为:7.5.
点评:解答本题时主要是把原题中的0.085×75化为8.5×0.75,7.5×0.1化为0.75×1.
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