CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
59 + = 61
66 - = 66
91 + = 91
73 - = 71
79 + = 84
70 + = 71
66 + = 68
73 + = 73
38 + = 43
7 + = 9
43 - = 40
58 + = 61
59 - = 58
72 + = 74
21 + = 22
86 - = 85
91 - = 86
68 - = 64
42 - = 40
55 + = 61