128-42/3+16 11+0.5*6/2 (1.2+10.56/1.2)/5 37.5/1.25/0.25/3.2
问题描述:
128-42/3+16 11+0.5*6/2 (1.2+10.56/1.2)/5 37.5/1.25/0.25/3.2
简便计算
答
128-42/3+16=128-14+16=128+(16-14)=128+2=13011+0.5*6/2=11+0.5*3=11+1.5=12.5(1.2+10.56/1.2)/5=(1.44+10.56)/(1.2*5)=12/6=237.5/1.25/0.25/3.2=37.5/[(1.25*0.8)*(0.25*4)]=37.5/[1*1]=37.5回答完毕