Dans sa camionnette qui, vide, pèse 1,490 t, un livreur charge 89 colis pesant chacun 2,85 kg et 5 colis pesant chacun 6,50 kg. Il fait ensuite le plein du réservoir de son véhicule qui contient 63 L (1 L d’essence pèse 0,720 kg).
Quelle est alors la masse totale de la camionnette ?
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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