CHRONO

31 s.

Additions et soustractions à trous.

CHRONO

0 s.
44 + = 44
3 + = 6
17 - = 14
87 - = 86
69 - = 65
59 - = 56
63 + = 65
84 - = 81
33 - = 33
91 - = 85
84 + = 89
18 - = 14
74 - = 68
68 - = 67
6 + = 9
49 + = 54
54 + = 58
60 + = 66
29 + = 35
81 - = 77