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April 2021
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Analyse d'une production
On considère l'expression:
A=-2-(-8) + (-9) + 10
Voici l'extrait de trois copies :
1-Pauline
A=-2+8+ (-9) + 10
A = -2 + 8 - 9 + 10
A = -6 - 19
A = -15
2-Ness
A = -2- (-8) + (-9) + 10
A = -2 +8+ (-9) + 10
A = -2 + 8 + 10 + (-9)
A = 20 + (-9)
A = 11
1. Dans chaque cas, préciser
si le calcul est exact.
2. Corriger et expliquer les
éventuelles erreurs.
3- Thanh.
A=-2-(-8) + (-9) + 10
A = -2 +8+ (-9) + 10
A= 8 + 10 + (-2) + (-9)
A = 18 + (-11)
A=7
Bonjour j’ai besoin d’aide avec cette exercice merci.
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