CHRONO

55 s.

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

CHRONO

0 s.
2 + 7 + = 10
8 + 5 + = 17
1 + 6 + = 9
3 + 9 + = 15
2 + 3 + = 14
8 + 4 + = 14
6 + 5 + = 13
2 + 6 + = 10
2 + 1 + = 8
3 + 2 + = 11
6 + 4 + = 16
2 + 9 + = 13
4 + 2 + = 13
9 + 1 + = 14
6 + 5 + = 12
6 + 8 + = 15
7 + 3 + = 13
6 + 7 + = 16
3 + 5 + = 16
8 + 6 + = 15