Slt je doit calculer les sommes et différence suivante ? (-3)+5 = ....
(-7)+(-8)= ....
5 + (-7)=....
(-3)+9 =.....
(-24)+21 =....
(-12)+8 =...
45+(-23)=....
12+(-5)=...
0,8+(-4,8)=...
(-4,5)+2=....
(-7)+(+4)=...
0,5+(-0,5)=...
ET ENFIN 6,5+(-18,5)=....


Merci bcp encore
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