CHRONO

10 s.

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

CHRONO

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