82.54+835.27-20.38/2+2*6.23-390.81-9*1.03用简便方法怎么算
问题描述:
82.54+835.27-20.38/2+2*6.23-390.81-9*1.03用简便方法怎么算
答
1.82.54+835.27-20.38÷2+2×6.23-390.81-9×1.03
=82.54+835.27-10.19+12.46-390.81-9.27(试试凑整吧)
=520