CHRONO

10 s.

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

CHRONO

0 s.
4 + 4 + = 16
9 + 2 + = 13
2 + 3 + = 7
9 + 6 + = 18
2 + 8 + = 12
4 + 2 + = 14
4 + 3 + = 14
7 + 2 + = 12
5 + 3 + = 9
6 + 7 + = 16
7 + 3 + = 17
5 + 7 + = 19
6 + 6 + = 20
8 + 7 + = 18
1 + 9 + = 12
5 + 9 + = 19
1 + 1 + = 8
3 + 9 + = 17
1 + 1 + = 5
4 + 7 + = 18