文档介绍:第一页:
9+1= 2+6= 4+1= 3+4=
9-8= 9-5= 5-1= 5+3=
5-2= 10-6= 10-6= 4-1=
10-6= 1+5= 4-3= 8-2=
2+2= 5+3= 1+9= 6-3=
7-3= 5+2= 2+5= 3+3=
2+2= 2+7= 1+2= 4+3=
3+7= 3+5= 8-4= 8-6=
4-1= 5-4= 6-1= 9-2=
4+3= 6-2= 4+5= 3+5=
3+7= 1+1= 7-6= 2+3=
1+1= 8+2= 5+5= 7-2=
8-4= 3+6= 9-3= 3+2=
6-3= 7-6= 2+8= 4+6=
3+5= 1+5= 8-4= 3+4=
4+5= 5-1= 2+2= 2+3=
8-4= 1+9= 1+9= 8-7=
1+3= 1+6= 8-2= 10-1=
10-7= 10-3= 9+1= 5-1=
7+1= 7-5= 8-2= 10-6=
2+8= 5+3= 3+6= 7-4=
7-1= 6+2= 9+1= 5-3=
10-1= 9-2= 1+2= 6+2=
5+5= 6+1= 1+9=