CHRONO

27 s.

Additions et soustractions à trous.

CHRONO

0 s.
10 + = 14
31 - = 31
21 + = 25
75 - = 72
35 - = 33
19 + = 25
11 - = 7
44 + = 46
67 + = 68
67 - = 61
29 + = 30
96 + = 97
90 - = 85
58 + = 63
21 + = 22
87 + = 91
39 - = 36
44 + = 49
14 + = 17
87 - = 87