文档介绍：(1)
5+3= 1+7=
6+2= 3+2=
4+3= 5+2=
3+6= 2+4=
4+5= 4+4=
3+3= 2+7=
1+8= 2+2=
3+4= 4+3=
2+5= 1+5=
4+2= 5+2=
4+5= 2+3=
1+6= 2+6=
3+2=
(2)
2+3= 3+4=
1+5= 5+4=
2+2= 3+3=
4+4= 1+6=
5+2= 3+6=
6+3= 2+5=
2+6= 4+2=
2+7= 3+5=
5+4= 1+8=
2+4= 4+5=
5+4=
1+7= 5+3=
3+5= 6+3=
(3)
2+7=
1+8= 5+4=
2+2= 3+3=
4+4= 1+6=
2+2=
6+2= 3+2=
4+3= 6+3=
3+4= 4+3=
2+5=
2+6= 4+2=
4+5= 2+3=
1+6= 2+6=
3+2=
2+7= 3+5=
2+5=
(4)
12+4=
14+5= 14+4=
15+3= 13+3= 12+7=
11+8= 12+2=
11+7=
16+2= 13+2=
15+2=
14+5= 12+3=
11+6= 12+6=
13+2=
14+3= 15+2=
13+6=
13+4= 14+3=
12+5= 11+5=
14+2=
(5)
15+4=
12+2= 13+3=
14+4=
12+3= 13+4=
11+5= 11+6=
15+2= 13+6=
11+8=
12+4= 14+5=
15+4=
11+7= 15+3=
16+3= 12+5=
13+5=
15+4=
13+5= 16+3=
12+6= 14+2=
12+7=
(6)
14+4= 11+6=
12+2=
16+2= 13+2=
14+3= 16+3=
12+7=
12+6= 14+2=
14+5= 12+3=
11+6=
12+6=
13+2=
12+7= 13+5=
11+8= 15+4=
12+2=
13+4= 14+3=
12+5=
14+5=
13+3=
(7)
9-4=
5-5=
4-1=
9-7=
9-5=
8-5=
9-6=
8-3=
4-3=
4-2=
7-3=
5-4=
3-2=
7-5=
7-6=
3-1=
8-7=
8-2=
7-2=
8-4=
7-4=
9-1=
8-8=
7-1=
9