CHRONO

11 s.

Ajouter ou retrancher un nombre du type 10, 200...

CHRONO

0 s.
120 - 20 =
170 + 60 =
156 + 400 =
196 - 50 =
208 + 200 =
178 - 10 =
299 - 10 =
69 + 300 =
25 + 20 =
158 + 20 =
52 - 30 =
530 + 40 =
134 + 500 =
229 + 70 =
869 + 100 =
313 + 20 =
680 + 10 =
549 + 400 =
168 + 30 =
251 + 60 =