Quiz interactif : Algèbre et calcul pour la 7ème année

Question 1 sur 10 10:00

[{"id":24938,"question":"Quelle est la solution de l'équation 3x = 15 ?","option_a":"x = 3","option_b":"x = 5","option_c":"x = 12","option_d":"x = 45","option_e":"","option_f":"","bonne_reponse":"B","explication":"Diviser les deux côtés par 3 donne x = 15 \/ 3 = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24939,"question":"Dans l'expression 2 + 3 × 4, quelle opération doit-on effectuer en premier ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La multiplication a priorité sur l'addition (règle PEMDAS).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24940,"question":"Quel est le résultat de (-8) + 5 ?","option_a":"-13","option_b":"-3","option_c":"3","option_d":"13","option_e":"","option_f":"","bonne_reponse":"B","explication":"Ajouter un nombre négatif revient à soustraire : -8 + 5 = -3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24941,"question":"L'équation 2x + 7 = 15 a pour solution x = 4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Résoudre : 2x = 15 - 7 → 2x = 8 → x = 4. La solution est correcte, mais l'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24942,"question":"Quelle est la valeur de x dans l'équation x - 9 = -4 ?","option_a":"x = -13","option_b":"x = -5","option_c":"x = 5","option_d":"x = 13","option_e":"","option_f":"","bonne_reponse":"C","explication":"Ajouter 9 des deux côtés : x = -4 + 9 = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24943,"question":"Le produit de deux nombres négatifs est toujours positif.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Exemple : (-2) × (-3) = 6 (positif).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24944,"question":"Quel est le résultat de 12 ÷ (3 + 1) ?","option_a":"2","option_b":"3","option_c":"4","option_d":"6","option_e":"","option_f":"","bonne_reponse":"C","explication":"Calculer d'abord la parenthèse : 3 + 1 = 4, puis 12 ÷ 4 = 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24945,"question":"L'équation 5x - 2 = 3x + 6 a pour solution x = 4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Résoudre : 5x - 3x = 6 + 2 → 2x = 8 → x = 4. La solution est correcte.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24946,"question":"Quelle est la solution de l'équation 7 = x + 2 ?","option_a":"x = 5","option_b":"x = 9","option_c":"x = -5","option_d":"x = -9","option_e":"","option_f":"","bonne_reponse":"A","explication":"Soustraire 2 des deux côtés : x = 7 - 2 = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":24947,"question":"Le quotient de deux nombres de signes opposés est toujours négatif.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Exemple : 6 ÷ (-2) = -3 (négatif).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]