8 1
1+7= 7+1= 8-1= 8-7= 9 1
8 1+8= 8+1= 9-1= 9-8=
8 2
2+6= 6+2= 8-2= 8-6=
9 2
2+7= 7+2= 9-2= 9-7= 8 3
3+5= 5+3= 8-3= 8-5=
9
3
6+3= 3+6= 9-3= 9-6= 8 4
4+4= 8-4=
9
4
4+5= 5+4= 9-4= 9-5= 8 5
5+3= 3+5= 8-3= 8-5=
9
5
5+4= 4+5= 9-5= 9-4= 8
8
6
7
6+2= 7+1= 2+6= 1+7= 8-6= 8-7= 8-2=
8-1=
9
9 9
6 6 7 8
6+3= 7+2= 8+1= 3+6= 2+7= 1+8= 9-6= 9-7= 9-8= 9-3= 9-2= 9-1=
7 1
1+6= 6+1= 7-1= 7-6= 6 1
8 1+5= 5+1= 6-1= 6-5=
7 2
2+5= 5+2= 7-2= 7-5=
6 2
2+4= 4+2= 6-2= 6-4=
7 3
3+4= 4+3= 7-3= 7-4=
6
3
3+3= 6-3=
7 4
4+3= 3+4= 7-4= 7-3=
6
4
4+2= 2+4= 6-4= 6-2= 7 5
5+2= 2+5= 7-5= 7-2=
6
5
5+1= 1+5= 6-5= 6-1= 7
7
6
7
6+1= 7+0= 1+6= 0+7= 7-6= 7-7= 7-1=
7-0=
6
2 2
6 6 1 2
6+0= 1+1= 2+0= 0+6= 0+2= 6-6= 2-1=
2-2= 6-0=
2-0=
5 1
8 1+4= 4+1= 5-1= 5-4= 10 1
8 1+9= 9+1= 5 2
2+3= 3+2= 5-2= 5-3=
10 2
2+8= 8+2= 5
3
6+3= 3+6= 9-3= 9-6=
10
3
7+3= 3+7= 5
4
4+1= 1+4= 5-4= 5-1=
10
4
4+6= 6+4= 10-4= 10-6=
5
5
5+0= 0+5= 5-5= 5-0=
10
5
5+5= 3 1 6 1+2= 2+1= 3-1= 3-2=
10 6 6 6+4= 4+6= 10-6= 10-4= 3 2 2+1= 1+2= 3-2= 3-1=
10 7 7+3= 3+7= 10-3= 3
3
3+0= 0+3= 3-3= 3-0=
10
8
8+2= 2+8= 10-8= 10-2=
10-1= 10-9= 10-2= 10-8= 10-3= 10-7= 10-5=
10-7= 4 1
8 1+3= 3+1= 4-1= 4-3=
4 2
2+2= 4-2=
4
3
1+3= 3+1= 4-3= 4-1= 4
4
4+0= 0+4= 4-4= 4-0= 9
5
5+4= 4+5= 9-5= 9-4= 9 6 6 6+3= 3+6= 9-6= 9-3= 9 7 7+2= 2+7= 9-7= 9-2= 9
8
8+1= 1+8= 9-8= 9-1=
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