41.2乘8.1+11乘9.25+53.7乘1.9简便方法大家来帮我

你好!41.2*8.1+11*9.25+53.7*1.9=41.2*8.1+11*9.25+(41.2+12.5)*1.9=41.2*8.1+41.2*1.9+12.5*1.9+11*(1.25+8)=41.2*(8.1+1.9)+12.5*1.9+1.1*12.5+88=41.2*10+12.5*3+88=412+88+37.5=500+37.5=537.5如果本题有什么不...