CHRONO

31 s.

Additions et soustractions à trous.

CHRONO

0 s.
68 - = 64
78 - = 75
22 - = 19
72 + = 77
61 + = 64
75 + = 76
86 + = 87
64 - = 63
22 - = 16
76 + = 80
35 - = 35
65 - = 65
8 + = 11
92 - = 88
90 + = 91
60 - = 56
35 - = 32
11 - = 8
45 - = 40
36 + = 38