CHRONO

31 s.

Additions et soustractions à trous.

CHRONO

0 s.
87 - = 82
84 - = 80
52 - = 47
78 + = 82
6 + = 12
48 + = 54
42 - = 37
24 - = 22
15 + = 18
71 + = 73
41 + = 45
68 - = 65
72 - = 69
80 - = 77
56 + = 56
62 + = 62
32 - = 27
54 - = 51
61 + = 67
49 - = 46