CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
32 + = 36
41 + = 44
18 - = 14
47 - = 43
31 - = 27
42 - = 40
56 - = 56
59 + = 60
64 + = 67
30 - = 27
81 - = 77
44 + = 45
63 - = 57
67 + = 72
79 + = 79
42 + = 48
88 - = 88
50 + = 54
89 + = 93
44 + = 48