CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
49 - = 46
24 + = 27
75 + = 79
39 + = 41
50 - = 46
74 - = 68
31 - = 25
38 - = 35
95 - = 93
13 + = 14
34 + = 38
23 + = 28
57 - = 54
84 + = 90
4 + = 4
14 - = 9
82 + = 86
83 + = 88
45 - = 43
23 - = 19