CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
43 - = 40
18 - = 16
42 - = 36
67 - = 63
77 - = 75
74 + = 79
2 + = 3
56 - = 55
60 - = 60
76 + = 82
89 + = 94
60 - = 58
32 + = 37
49 - = 46
7 + = 13
29 + = 29
34 - = 31
6 + = 9
77 + = 83
40 + = 43