CHRONO

34 s.

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

CHRONO

0 s.
6 + 5 + = 20
5 + 2 + = 16
6 + 3 + = 11
7 + 5 + = 20
8 + 5 + = 15
3 + 6 + = 13
3 + 9 + = 16
6 + 4 + = 15
9 + 4 + = 18
5 + 1 + = 8
4 + 6 + = 17
3 + 7 + = 18
7 + 9 + = 20
7 + 6 + = 17
6 + 4 + = 18
8 + 6 + = 17
5 + 7 + = 18
1 + 7 + = 16
6 + 8 + = 20
1 + 3 + = 11