CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
83 + = 88
93 - = 89
49 + = 55
7 - = 1
84 + = 90
82 + = 87
36 - = 34
72 - = 67
32 - = 31
75 - = 74
34 + = 35
65 + = 68
1 + = 1
92 + = 98
62 - = 58
19 + = 20
18 - = 16
66 + = 67
34 - = 32
98 - = 98