CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
43 - = 38
68 - = 67
62 + = 66
69 + = 69
87 - = 87
82 - = 76
61 + = 66
80 - = 79
76 - = 73
78 + = 84
96 + = 96
50 - = 45
77 + = 80
55 - = 55
11 - = 9
94 + = 99
2 + = 8
6 - = 4
17 - = 17
72 + = 78