CHRONO

10 s.

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

CHRONO

0 s.
2 + 4 + = 15
3 + 1 + = 13
2 + 7 + = 13
6 + 1 + = 16
4 + 8 + = 19
6 + 6 + = 15
3 + 3 + = 13
9 + 1 + = 18
7 + 7 + = 17
1 + 4 + = 11
7 + 8 + = 19
8 + 6 + = 17
5 + 8 + = 14
5 + 5 + = 11
6 + 2 + = 10
6 + 3 + = 15
2 + 3 + = 8
2 + 8 + = 14
5 + 5 + = 14
6 + 2 + = 13