CHRONO

34 s.

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

CHRONO

0 s.
6 + 1 + = 12
7 + 7 + = 19
2 + 9 + = 12
7 + 7 + = 15
3 + 2 + = 12
9 + 4 + = 15
8 + 7 + = 20
7 + 1 + = 11
4 + 5 + = 18
5 + 3 + = 10
4 + 5 + = 15
9 + 3 + = 19
3 + 6 + = 15
1 + 5 + = 13
6 + 2 + = 11
1 + 2 + = 9
2 + 3 + = 7
7 + 6 + = 19
8 + 1 + = 18
5 + 6 + = 18