CHRONO

27 s.

Additions et soustractions à trous.

CHRONO

0 s.
31 - = 30
90 - = 90
21 - = 21
20 + = 20
87 - = 87
74 - = 74
79 + = 82
63 + = 65
60 + = 66
95 - = 95
86 - = 81
80 + = 85
46 + = 49
50 + = 55
78 - = 75
57 - = 54
5 - = 1
61 - = 58
68 + = 71
14 + = 20