9999*0.07+1111*0.27怎样简算
问题描述:
9999*0.07+1111*0.27怎样简算
答
9999X0.07+1111X0.07+1111X0.2=11110X0.07+222.2=777.7+222.2=999.9
答
=(10000-1)*0.07+1111*(0.3-0.03)
=700-0.07+333.3-33.33
=999.9