Question

8．脫式計(jì)算：
650+258-857      
590+369-810      
900-125-360
870-560-300     
120+540+150       
870-560+360．

Answer 1

分析 按照從左到右的順序進(jìn)行計(jì)算．

解答 解：650+258-857      
=908-857
=51

590+369-810     
=959-810
=149

900-125-360
=775-360
=415

870-560-300     
=310-300
=10

120+540+150       
=660+150
=810

870-560+360
=310+360
=670

點(diǎn)評 本題考查了簡單的四則混合運(yùn)算，計(jì)算時(shí)先理清楚運(yùn)算順序，根據(jù)運(yùn)算順序逐步求解即可．