41.28.1+111.25+53.7*1.9的简算

分类: 作业答案 • 2023-01-13 12:48:51

问题描述：

41.2*8.1+11*1.25+53.7*1.9的简算

答

=41.2*8.1+11*1.25+(41.2+12.5)*1.9
=41.2*(8.1+1.9)+11*1.25+12.5*1.9
=412+12.5*(1.1+1.9)
=412+12.5*3
=412+37.5
=449.5

41.2*8.1+11*1.25+53.7*1.9的简算