Exercice 1: (3 points)
Calculer :
a) -17 + (-12)=29 b) 9+ (-2) =
c) -9,8 + (+4,3)
d) +5,6 + (+ 13 ) = Ap... e) -11 - (-8)= ..Mª.
Exercice 2 (4 points)
Calculer en écrivant les étapes :
A=-3-(+9)-(−17)+(−8)−(−2) B=7+(-6)+(-12)+16+(-
f) -14 (+6,57
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