CHRONO

10 s.

Additions et soustractions à trous.

CHRONO

0 s.
56 + = 56
54 - = 50
31 - = 26
95 - = 93
82 + = 83
87 - = 81
96 - = 96
39 - = 34
6 - = 3
12 - = 6
10 - = 6
59 + = 61
22 + = 25
37 + = 43
48 + = 54
34 + = 34
33 - = 32
50 + = 56
98 + = 99
40 - = 38