CHRONO

27 s.

Additions et soustractions à trous.

CHRONO

0 s.
82 - = 82
58 + = 63
25 - = 19
46 - = 41
43 - = 40
30 + = 31
24 - = 21
62 + = 64
14 + = 16
7 - = 6
21 + = 26
60 + = 65
12 + = 18
16 - = 15
80 + = 80
8 - = 7
79 + = 81
30 + = 36
81 - = 79
12 + = 17