CHRONO

10 s.

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

CHRONO

0 s.
2 + 4 + = 13
1 + 6 + = 12
7 + 4 + = 15
2 + 1 + = 10
4 + 7 + = 20
3 + 8 + = 17
9 + 3 + = 15
1 + 1 + = 11
9 + 6 + = 19
8 + 8 + = 18
7 + 6 + = 20
5 + 2 + = 14
6 + 8 + = 19
9 + 8 + = 19
1 + 3 + = 13
2 + 5 + = 8
4 + 4 + = 15
1 + 4 + = 6
1 + 3 + = 12
1 + 2 + = 11