7+0=?
7
3+0=?
3
0 + 6 =?
6
6 + 0 =?
6
4 + 0 =?
4
0 + 3 =?
3
4 + 0 =?
4
6 + 0 =?
6
0 + 6 =?
6
3 + 0 =?
3
4+0=?
4
2 + 0 =?
2
6+0=?
6
5+0=?
5
3+0=?
3