CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
71 + = 73
71 + = 74
81 + = 86
67 - = 61
78 + = 78
5 - = 3
77 - = 72
55 + = 58
31 - = 25
20 + = 25
58 + = 61
47 + = 50
20 + = 26
29 - = 26
7 - = 4
19 + = 25
62 - = 62
48 - = 45
55 - = 53
63 - = 63