CHRONO

27 s.

Additions et soustractions à trous.

CHRONO

0 s.
32 + = 34
30 - = 29
91 + = 95
73 - = 70
69 - = 63
6 + = 8
53 - = 51
11 - = 8
79 + = 83
21 + = 22
87 + = 92
14 - = 11
88 + = 91
88 - = 87
53 - = 52
96 - = 93
31 + = 35
68 - = 68
4 + = 5
28 - = 23