Question

请用简便方法计算

3.86×0.69+3.86×0.21+38.6

Answer 1

3.86×0.69+3.86×0.21+38.6=3.86×0.69+3.86×0.21+3.86×10=3.86×(0.69+0.21+10)=3.86×10.9=42.074

Answer 2

3.86×0.69+3.86×0.21+38.6=3806*(0.69+0.21+1)=38.6*1=38.6

Answer 3

3.86提出来