En 2050, il y aura environ 64 000 000 de Français et un tiers d’entre eux aura plus de 60 ans.
Indique, par un encadrement au million près, combien de
Français auront plus de 60 ans en 2050.
Lors de ce rituel, les élèves doivent tenter de résoudre un problème donné.
La démarche de résolution et la compréhension du problème donné compte plus que le résultat.
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