计算:(1)23-17-(-7)+(-16);(2)1+(-2)+|-2-3|-5;(3)-5+6÷(-2)× ;(4)(1 )×(-

2024-12-04 17:06:42
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回答1:

解:(1)原式=23-17+7-16
                       =30-33
                       =-3;
(2)原式=1-2+5-5
                =-1;
(3)原式=-5+6×(- )×
                =-5+(-1)
                =-6;
(4)原式=
               
               
(5)原式=
               =
               =-18。