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QuestionAnswer
0+0 0+0=0
0-0 0-0=0
1+0 1+0=1
0+1 0+1=1
1-0 1-0=1
1-1 1-1=0
0+2 0+2=2
2+0 2+0=2
2-0 2-0=2
2-2 2-2=0
3+0 3+0=3
0+3 0+3=3
3-0 3-0=3
3-3 3-3=0
4+0 4+0=4
0+4 0+4=4
4-0 4-0=4
4-4 4-4=0
5+0 5+0=5
0+5 0+5=5
5-0 5-0=5
5-5 5-5=0
6+0 6+0=6
0+6 0+6=6
6-0 6-0=6
6-6 6-6=0
7+0 7+0=7
0+7 0+7=7
7-0 7-0=7
7-7 7-7=0
8+0 8+0=8
0+8 0+8=8
8-0 8-0=8
8-8 8-8=0
9+0 9+0=9
0+9 0+9=9
9-0 9-0=9
9-9 9-9=0
10+0 10+0=10
0+10 0+10=10
10-0 10-0=10
10-10 10-10=0
11+0 11+0=11
0+11 0+11=11
11-0 11-0=11
11-11 11-11=0
12+0 12+0=12
0+12 0+12=12
12-0 12-0=12
12-12 12-12=0
Created by: dmahoney
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