Quiz interactif : Les fondamentaux de maths en 7ème année

Question 1 sur 10 10:00

[{"id":29168,"question":"Quel est le résultat de l'opération : 15 + (-7) × 2 ?","option_a":"1","option_b":"11","option_c":"-1","option_d":"22","option_e":"","option_f":"","bonne_reponse":"A","explication":"On applique la priorité des opérations : d'abord la multiplication (-7 × 2 = -14), puis l'addition (15 + (-14) = 1).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29169,"question":"Un triangle a deux angles de 45° et 60°. Quelle est la mesure du troisième angle ?","option_a":"75°","option_b":"90°","option_c":"105°","option_d":"120°","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme des angles d'un triangle est de 180°. Donc 180° - (45° + 60°) = 75°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29170,"question":"Vrai ou Faux : Le périmètre d'un carré est égal à 4 fois la longueur de son côté.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale des carrés : P = 4 × côté.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29171,"question":"Résoudre l'équation : 3x - 5 = 10.","option_a":"x = 5","option_b":"x = 15\/3","option_c":"x = 15","option_d":"x = -5","option_e":"","option_f":"","bonne_reponse":"B","explication":"3x = 10 + 5 → 3x = 15 → x = 15\/3 = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29172,"question":"Vrai ou Faux : 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":"C'est une règle de base en mathématiques : (-a) × (-b) = a × b (positif).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29173,"question":"Quelle est l'aire d'un rectangle de 8 cm de longueur et 5 cm de largeur ?","option_a":"13 cm²","option_b":"26 cm²","option_c":"40 cm²","option_d":"30 cm²","option_e":"","option_f":"","bonne_reponse":"C","explication":"L'aire d'un rectangle se calcule par A = longueur × largeur = 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29174,"question":"Vrai ou Faux : La médiatrice d'un segment est une droite perpendiculaire au segment passant par son milieu.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est la définition exacte de la médiatrice d'un segment.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29175,"question":"Quel est le résultat de : (2\/3) ÷ (4\/5) ?","option_a":"8\/15","option_b":"10\/12","option_c":"5\/6","option_d":"10\/15","option_e":"","option_f":"","bonne_reponse":"D","explication":"Diviser par une fraction revient à multiplier par son inverse : (2\/3) × (5\/4) = 10\/12 = 5\/6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29176,"question":"Vrai ou Faux : Un parallélogramme a ses côtés opposés parallèles et de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété caractéristique des parallélogrammes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":29177,"question":"Quelle est la valeur de x dans l'équation : 2(x + 3) = 16 ?","option_a":"x = 5","option_b":"x = 10","option_c":"x = 2","option_d":"x = 7","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x + 6 = 16 → 2x = 10 → x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]