题目内容

1.25×6.78+25×3.47+125×0.0382.
分析:根据题意,把25看作1.25×20,125看作1.25×100,然后再根据乘法分配律进行计算即可.
解答:解:1.25×6.78+25×3.47+125×0.0382,
=1.25×6.78+1.25×20×3.47+1.25×100×0.0382,
=1.25×6.78+1.25×69.4+1.25×3.82,
=1.25×(6.78+69.4+3.82),
=1.25×80,
=100.
点评:根据题意,把给出的数据,拆成乘法分配律的形式,然后再进行巧算即可.
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