41.2×8.1＋11×9又4分之1＋53.7×1.9
问题描述：
41.2×8.1＋11×9又4分之1＋53.7×1.9
答
41.2×8.1＋11×9又4分之1＋53.7×1.9
=41.2×8.1＋11×9.25＋41.2×1.9+12.5×1.9
=41.2×8.1＋41.2×1.9＋11×9.25+1.25×11+1.25×8
=41.2×（8.1+1.9）+11×（9.25+1.25）+10
=41.2×10+11×10.5+10
=412+115.5+10
=537.5