优质解答
加：减：
1+1= 8+1= 6-5= 9-7=
2+1= 9+0= 9-5= 9-1=
3+5= 4+2= 8-5= 2-1=
6+2= 5+2= 7-6= 8-0=
4+5= 7+2= 9-8= 5-1=
5+3= 6+1= 4-2= 4-2=
1+8= 2+3= 9-4= 6-6=
答案：
2,3,8,8,9,8,9,9,9,6,7,9,7,5,
1,4,3,1,4,2,5,2,8,1,8,4,2,0.
加：减：
1+1= 8+1= 6-5= 9-7=
2+1= 9+0= 9-5= 9-1=
3+5= 4+2= 8-5= 2-1=
6+2= 5+2= 7-6= 8-0=
4+5= 7+2= 9-8= 5-1=
5+3= 6+1= 4-2= 4-2=
1+8= 2+3= 9-4= 6-6=
答案：
2,3,8,8,9,8,9,9,9,6,7,9,7,5,
1,4,3,1,4,2,5,2,8,1,8,4,2,0.