CHRONO

10 s.

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

CHRONO

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