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maia381288
@maia381288
February 2023
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Exemples: La moyenne de la classe au dernier contrôle est de 12,7.
Je décide d'ajouter 1 point à tous les élèves; quelle est la nouvelle moyenne?
Je décide d'augmenter toutes les notes de 10%; quelle est la nouvelle moyenne?
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fleur0169
Réponse :
12,7+1/20 = 12.75
12,7*1.10 = 13.97
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Réponse :
12,7+1/20 = 12.75
12,7*1.10 = 13.97