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41.2×8.1+11×9.25+537×0.19=.

题目详情
41.2×8.1+11×9.25+537×0.19=______.
41.2×8.1+11×9.25+537×0.19=______. 41.2×8.1+11×9.25+537×0.19=______. 41.2×8.1+11×9.25+537×0.19=______. 41.2×8.1+11×9.25+537×0.19=______.
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答案和解析
41.2×8.1+11×9.25+537×0.19 =41.2×(10-1.9)+(10+1)×9.25+537×0.19 =412-41.2×1.9+92.5+9.25+53.7×1.9 =412+92.5+9.25+12.5×(2-0.1)=412+92.5+9.25+25-1.25 =437+100.5 =537.5.