CHRONO

10 s.

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

CHRONO

0 s.
5 + 4 + = 12
1 + 2 + = 11
6 + 4 + = 13
4 + 7 + = 15
5 + 6 + = 13
9 + 2 + = 15
6 + 8 + = 18
9 + 7 + = 18
9 + 6 + = 19
1 + 1 + = 6
7 + 7 + = 20
5 + 6 + = 15
6 + 3 + = 10
9 + 1 + = 16
6 + 7 + = 19
7 + 5 + = 14
6 + 6 + = 16
3 + 2 + = 7
3 + 9 + = 19
6 + 2 + = 9