January 2021 1 139 Report
Bonsoir
1/ Indique le signe sans calculer (noter + où - après la flèche ⇒ ).
12 + 3 ⇒
-3 – 1 ⇒
-13 + 7 ⇒
-3 + 17 ⇒
7 – 11 ⇒
11 – 7 ⇒
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