Un abreuvoir à vaches contient 980 L d’eau. Les bêtes boivent une première fois 2,2 hL, une deuxième fois 3,85 hL, puis une dernière fois 78 L.
Trouve la question et donne la réponse.
Le soir, l’agriculteur remplit l’abreuvoir avec sa citerne pleine de 5 hL.
Combien contiendra alors l’abreuvoir ?
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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