CHRONO

10 s.

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

CHRONO

0 s.
2 + 2 + = 10
8 + 8 + = 17
7 + 4 + = 18
5 + 6 + = 14
1 + 2 + = 8
9 + 7 + = 17
6 + 4 + = 16
2 + 6 + = 10
2 + 8 + = 14
2 + 8 + = 11
4 + 3 + = 14
2 + 5 + = 11
7 + 5 + = 14
1 + 7 + = 9
8 + 5 + = 20
1 + 8 + = 11
5 + 5 + = 19
4 + 1 + = 13
4 + 2 + = 9
8 + 1 + = 11