直接写出计算结果
(1)3-2-1=______
(2)-5+(+2)-(-4)=______
(3)=______
(4)=______
(5)=______
(6)=______.
网友回答
解:(1)3-2-1
=1-1
=0;
(2)-5+(+2)-(-4)
=-5+2+4
=-5+6
=1;
(3)(+1)×0
=×0+1×0
=0;
(4)-8÷(+)
=-8×
=-5;
(5)-6×(-+)
=-6×-6×(-)-6×
=-3+2-1
=(-3)+(-1)+2
=-4+2
=-2;
(6)-23÷×(-)2
=-8××
=-2.
故