1 + 2 + 1 =
5 + 5 =
1 + 0 =
8 + 8 =
6 + 4 + 1 =
3 + 3 =
50 + 25 + 10 +15 =
0 + 1 + 1 =
5 + 10 + 5 =
4 + 1 + 3 =
