CHRONO

115 s.

Additions et soustractions à trous.

CHRONO

0 s.
44 + = 46
6 - = 4
73 + = 75
25 + = 26
17 + = 23
10 - = 8
67 + = 72
41 - = 37
18 + = 24
47 + = 51
21 - = 15
46 - = 44
1 + = 3
59 - = 53
73 - = 70
73 + = 74
32 - = 30
20 + = 21
49 + = 52
16 + = 18