Proportion = part / total ; Pourcentage = proportion × 100.
1. Quelle expression correspond à une proportion exprimée sur 100 ?
2. On a une proportion de 0,235. Quel pourcentage cela représente-t-il ?
3. Augmenter une valeur de 12,5 % revient à la multiplier par quel coefficient ?
Proportion — définition ?
Part d’un ensemble, ratio favorables/total
Pourcentage — rôle ?
Exprimer une proportion sur 100
Conversion proportion — pourcentage ?
Proportion × 100
Effectif à partir proportion ?
n = p × N
Taux d’évolution — formule ?
c = 1 + t/100
Diminution — coefficient ?
c = 1 − t/100
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