计算:8.06-2.73-5.271.25++0.75+÷+×X-0.75X=0.375.
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解:(1)8.06-2.73-5.27,
=8.06-(2.73+5.27),
=8.06-8,
=0.06;
(2)1.25++0.75+,
=(1.25+0.75)+(+),
=2+1,
=3;
(3)÷+×,
=×+×,
=(+)×,
=1×,
=;
(4)X-0.75X=0.375,
?????? 0.25X=0.375,
?0.25X÷0.25=0.375÷0.25,
???????????X=1.5.
解析分析:(1)根据连减的性质进行计算;(2)根据加法交换律和结合律进行计算;(3)根据乘法分配律进行计算;(4)根据等式的性质进行解方程即可.
点评:四则运算,先弄清运算顺序,然后再进一步计算,能简算的要简算.