CHRONO

10 s.

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

CHRONO

0 s.
1 + 4 + = 10
1 + 8 + = 11
1 + 7 + = 17
6 + 2 + = 11
4 + 2 + = 9
1 + 8 + = 15
1 + 3 + = 7
5 + 6 + = 17
2 + 5 + = 11
5 + 1 + = 12
1 + 5 + = 15
5 + 8 + = 14
3 + 2 + = 8
9 + 5 + = 16
2 + 5 + = 9
1 + 6 + = 8
4 + 2 + = 13
6 + 3 + = 11
9 + 2 + = 20
9 + 6 + = 18