Calculer la valeur manquante (9e-GM.1)
Dans cette vidéo, tu vas découvrir comment appliquer les opérations inverses pour calculer la valeur manquante dans une formule pour calculer l’aire d’un polygone.
Thèmes
Nombres :
• Les nombres naturels
• Fractions
• Puissances et racines
Géométrie :
• Périmètre et aire de polygones
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