Les opérations inverses (9e-NO.1)
Dans cette vidéo, tu vas découvrir que les six opérations de base en calcul vont par paire, et qu’est-ce que ça veut dire quand on dit que deux opérations sont inverses l’une à l’autre.
Cela te sera utile dans la prochaine vidéo !
Thèmes
Nombres :
• Les nombres naturels
• Fractions
• Puissances et racines
Géométrie :
• Périmètre et aire de polygones
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