Quiz interactif : Testez vos connaissances en mathématiques 7ème année

Question 1 sur 10 10:00

[{"id":60687,"question":"Quelle est la solution de l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 10","option_d":"x = 7","option_e":"","option_f":"","bonne_reponse":"A","explication":"Soustraire 5 des deux côtés donne 3x = 15, puis diviser par 3 donne x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60688,"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":"Le périmètre d'un carré se calcule par 4 × côté = 4 × 4 = 16 cm. L'affirmation est donc vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60689,"question":"Quelle fraction est équivalente à 0,75 ?","option_a":"3\/4","option_b":"1\/2","option_c":"2\/3","option_d":"4\/5","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,75 = 75\/100 = 3\/4 après simplification.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60690,"question":"Dans un triangle rectangle, si les côtés de l'angle droit mesurent 3 cm et 4 cm, l'hypoténuse mesure 5 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"D'après le théorème de Pythagore : 3² + 4² = 9 + 16 = 25 = 5². L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60691,"question":"Quelle est la valeur de x dans l'équation 2(x - 3) = 10 ?","option_a":"x = 8","option_b":"x = 5","option_c":"x = 13","option_d":"x = 7","option_e":"","option_f":"","bonne_reponse":"A","explication":"Diviser par 2 donne x - 3 = 5, puis ajouter 3 donne x = 8.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60692,"question":"L'aire d'un rectangle de longueur 6 cm et de largeur 4 cm est de 24 cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire se calcule par longueur × largeur = 6 × 4 = 24 cm². L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60693,"question":"Quelle est la solution de l'inéquation 2x - 7 \u003E 5 ?","option_a":"x \u003E 6","option_b":"x \u003E 12","option_c":"x \u003C 6","option_d":"x \u003C 12","option_e":"","option_f":"","bonne_reponse":"A","explication":"Ajouter 7 donne 2x \u003E 12, puis diviser par 2 donne x \u003E 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60694,"question":"Dans une classe, 60% des élèves sont des filles. Si la classe compte 25 élèves, combien y a-t-il de garçons ?","option_a":"10","option_b":"15","option_c":"5","option_d":"20","option_e":"","option_f":"","bonne_reponse":"A","explication":"60% de 25 = 15 filles. Le nombre de garçons est 25 - 15 = 10.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60695,"question":"Le volume d'un cube d'arête 3 cm est de 27 cm³.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le volume se calcule par arête³ = 3³ = 27 cm³. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60696,"question":"Quelle est la moyenne de 8, 12 et 10 ?","option_a":"10","option_b":"9","option_c":"11","option_d":"8","option_e":"","option_f":"","bonne_reponse":"A","explication":"La moyenne se calcule par (8 + 12 + 10) \/ 3 = 30 \/ 3 = 10.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]