简算:7142.85/3.7/2.7/1.7*0.7

问题描述:

简算:7142.85/3.7/2.7/1.7*0.7

是乘以1.7吧?否则都除不尽了法一:把7142.85分解质因数即得7142.85=3*3*3*5*11*13*37*0.01=5*11*13*27*37*0.017142.85÷3.7÷2.7×1.7×0.7=5×11×13×27×37×0.01÷3.7÷2.7×1.7×0.7=5×11×13×27×37÷37÷27...