简便计算：41又1/5×8.1+5.37×19+1.1×92又1/2

简便计算：41又1/5×8.1+5.37×19+1.1×92又1/2
简便计算：41又1/5×8.1+5.37×19+1.1×92又1/2

简便计算：41又1/5×8.1+5.37×19+1.1×92又1/2
41又1/5×8.1+5.37×19+1.1×92又1/2
41.2*8.1+5.37*19+1.1*92.5
=41.2*(8+0.1)+5.37*(20-1)+(1+0.1)*92.5
=41.2*8+4.12+5.37*20-5.37+92.5+9.25
=329.6+4.12+107.4-5.37+92.5+9.25
=329.6+107.4+92.5+(4.12+9.25)-5.37
=437+92.5+13.37-5.37
=529.5+8
=537.5