计算,能简算的要简算 4%×99+0.0475%×25+175×(+)×40.
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解:(1)4%×99+0.04,
=0.04×99+0.04,
=0.04×(99+1),
=0.04×100,
=4;
(2)75%×25+175×,
=×25+175×,
=×(25+175),
=×200,
=150;
(3)(+)×40,
=×40+×40,
=15+28,
=43.
解析分析:(1)把4%化成小数是0.04,再根据乘法分配律进行简算;(2)把75%化成分数是,再根据乘法分配律进行简算;(3)根据乘法分配律进行简算即可.
点评:本题主要考查乘法分配律的应用,然后再根据题意进一步解答即可.