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Hondaabderaman
@Hondaabderaman
October 2020
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Aidez moi exo de maths :
1) transformer ses soustractions en addition .
a.2-(+6)=2+…=…
b.-5-(-3)=-5+…=…
c.-4-1=… … = …
d.-3-(-8)=… … = …
2. Calculer A = -8+2-5+9-7:
a. en effectuant les calculs de la gauche vers la droite.
b.en regroupant les nombres positifs et les nombres négatifs .
3.Ecrire chaque expression avec uniquement des additions puis calculer.
a. A= -18+7-10-3+12 .
b. B= 4-(-2) +(-8)-5+1.
c. C= -5+ (-1)-(-8)-2+6-1.
4. Calculer les sommes algébriques D et E .
D= -9-(-13)+(-7)-12+1.
E= -7,5-4+12,3+(-6)-(12,7)
Merci
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