CHRONO

71 s.

Additions à trous (a + b + ? = s <= 20).

CHRONO

0 s.
3 + 4 + = 9
8 + 4 + = 19
1 + 2 + = 11
3 + 8 + = 15
5 + 2 + = 16
4 + 4 + = 11
1 + 2 + = 7
2 + 1 + = 5
3 + 2 + = 9
4 + 5 + = 16
4 + 8 + = 20
9 + 5 + = 15
1 + 1 + = 3
5 + 1 + = 13
5 + 1 + = 10
1 + 9 + = 17
1 + 2 + = 8
7 + 9 + = 20
9 + 2 + = 20
1 + 9 + = 11