Quiz Mathématiques 9ème : Équations, Géométrie et Proportionnalité

Question 1 sur 10 10:00

[{"id":52181,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 3","option_c":"x = 15\/3","option_d":"x = 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x - 5 = 10 → 3x = 15 → x = 5. La solution est x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52182,"question":"Le périmètre d'un carré de côté 4 cm est de 16 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Périmètre = 4 × côté = 4 × 4 = 16 cm. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52183,"question":"Si 3 kg de pommes coûtent 4,500 TND, combien coûtent 5 kg ?","option_a":"7,500 TND","option_b":"6,000 TND","option_c":"9,000 TND","option_d":"5,000 TND","option_e":"","option_f":"","bonne_reponse":"A","explication":"Prix au kg = 4,500 \/ 3 = 1,500 TND. Pour 5 kg : 5 × 1,500 = 7,500 TND.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52184,"question":"La formule du volume d'un cube est V = c³, où c est l'arête.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La formule correcte est V = c³. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52185,"question":"Résoudre : 2(x + 3) = 14","option_a":"x = 4","option_b":"x = 2","option_c":"x = 7","option_d":"x = -1","option_e":"","option_f":"","bonne_reponse":"B","explication":"2(x + 3) = 14 → x + 3 = 7 → x = 4. La solution est x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52186,"question":"L'aire d'un rectangle de longueur 8 cm et largeur 5 cm est de 40 cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Aire = longueur × largeur = 8 × 5 = 40 cm². L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52187,"question":"Si un train parcourt 300 km en 2h, quelle est sa vitesse moyenne ?","option_a":"150 km\/h","option_b":"600 km\/h","option_c":"100 km\/h","option_d":"120 km\/h","option_e":"","option_f":"","bonne_reponse":"A","explication":"Vitesse = distance \/ temps = 300 \/ 2 = 150 km\/h.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52188,"question":"La somme des angles d'un triangle est toujours égale à 180°.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale de la géométrie plane. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52189,"question":"Calculer : 0,75 + 1,25","option_a":"2","option_b":"1,95","option_c":"2,10","option_d":"1,50","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,75 + 1,25 = 2,00. Le résultat est 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":52190,"question":"Un angle de 90° est appelé angle plat.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un angle de 90° est un angle droit. Un angle plat mesure 180°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]