CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
13 - = 12
61 - = 58
37 + = 39
48 + = 48
78 + = 79
40 + = 45
94 - = 91
57 - = 51
73 + = 77
83 - = 82
66 + = 72
63 + = 69
50 + = 51
76 + = 77
85 - = 85
52 + = 58
59 - = 56
96 + = 97
63 - = 57
25 + = 31