II. Calculer les sommes en écriture simplifiée
- 2-5 =.......... 6-9=.. ........ - 4 + 7 = .......... 5-6 =..
- 2-3 = ....... 8-3=. .... -9 + 4 =
....... -5 + 11 = ...
- 5+1 = .......
-4-3= ...... -8-8=.
- 7+7=.
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