Quiz Mathématiques : Niveau 3ème Année Collège

Question 1 sur 10 10:00

[{"id":42256,"question":"Quelle est la solution de l'équation 3x - 5 = 16 ?","option_a":"x = 7","option_b":"x = 5","option_c":"x = 11","option_d":"x = 3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 3x - 5 = 16, on ajoute 5 des deux côtés : 3x = 21, puis on divise par 3 : x = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42257,"question":"Le théorème de Pythagore s'applique uniquement aux triangles rectangles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le théorème de Pythagore est valable uniquement pour les triangles rectangles, où le carré de l'hypoténuse est égal à la somme des carrés des deux autres côtés.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42258,"question":"Quelle est l'aire d'un rectangle de longueur 8 cm et de largeur 5 cm ?","option_a":"40 cm²","option_b":"26 cm²","option_c":"30 cm²","option_d":"13 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un rectangle se calcule en multipliant la longueur par la largeur : 8 cm × 5 cm = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42259,"question":"La fraction 12\/18 est-elle irréductible ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La fraction 12\/18 peut être simplifiée par 6 : 12 ÷ 6 = 2 et 18 ÷ 6 = 3, donc 12\/18 = 2\/3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42260,"question":"Quel est le résultat de l'expression (4 + 2) × 3 - 5 ?","option_a":"13","option_b":"19","option_c":"21","option_d":"15","option_e":"","option_f":"","bonne_reponse":"A","explication":"On commence par les parenthèses : (4 + 2) = 6, puis on multiplie par 3 : 6 × 3 = 18, et enfin on soustrait 5 : 18 - 5 = 13.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42261,"question":"Un angle de 90° est-il un angle obtus ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un angle obtus mesure entre 90° et 180°. Un angle de 90° est un angle droit, pas obtus.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42262,"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":"On développe d'abord : 2x + 6 = 16, puis on soustrait 6 : 2x = 10, et enfin on divise par 2 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42263,"question":"Le périmètre d'un carré de côté 4 cm est-il égal à 16 cm ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le périmètre d'un carré se calcule en multipliant le côté par 4 : 4 cm × 4 = 16 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42264,"question":"Quelle est la solution de l'inéquation 5x + 2 \u003E 17 ?","option_a":"x \u003E 3","option_b":"x \u003E 5","option_c":"x \u003E 2","option_d":"x \u003E 4","option_e":"","option_f":"","bonne_reponse":"A","explication":"On soustrait 2 des deux côtés : 5x \u003E 15, puis on divise par 5 : x \u003E 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":42265,"question":"Un triangle isocèle a-t-il deux côtés de même longueur ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Par définition, un triangle isocèle possède deux côtés de même longueur et deux angles égaux.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]