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Pourcentages

QuestionRéponseJustification
Combien font 10% de 70€ ? 7€ 70/10 = 7
Combien font 30% de 70€ ? 21€ 70/10 = 7 7 x 3 = 21
Combien font 10% de 400L ? 40L 400/10 = 40
Combien font 60% de 400L ? 240L 400/10 = 40 40 x 6 = 240
Combien font 10% de 83 kg ? 8,3 kg 83/10 = 8,3
Combien font 20% de 83 kg ? 16,6 kg 83/10 = 8,3 8,3 x 2 = 16,6
Combien font 15% de 158€ ? 23,70€ 15 x 158 / 100 = 23,7 ou 15 / 100 x 158 = 23,7
Combien font 81% de 55 m ? 44,55 m 81 x 55 / 100 = 44,5 ou 81/100 x 55 = 44,55
Sur 100 élèves, 37 font anglais LV2. Exprime cette proportion en pourcentage. 37% des 100 élèves font anglais LV2.
Sur 50 élèves, 8 sont latinistes. Exprime cette proportion en pourcentage. 16% des 50 élèves sont latinistes. 100 = 50 x 2 8 x 2 = 16
Sur 200 élèves, 70 sont demi-pensionnaires. Exprime cette proportion en pourcentage. 35% des 200 élèves sont dp. 100 = 200 / 2 70 / 2 = 35
Sur 150 élèves, 30 sont inscrits à l'UNSS. Exprime cette proportion en pourcentage. 20% des 150 élèves vont à l'UNSS. 100 = 150 - 150 / 3 30 - 30 / 3 = 30 - 10 = 20
Sur 30 articles dans son panier, Macha a acheté 12 fruits. Quel est le pourcentage de fruits dans son panier ? 40% 12 x 100 / 30 = 40
Created by: mmcoursdemaths
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