Quiz Maths 8ème : Nombres, Fractions et Géométrie

Question 1 sur 10 10:00

[{"id":41006,"question":"Quel est le résultat de l'opération 3\/4 + 1\/2 ?","option_a":"5\/6","option_b":"7\/8","option_c":"1","option_d":"5\/4","option_e":"","option_f":"","bonne_reponse":"D","explication":"Pour additionner des fractions, il faut les mettre sous le même dénominateur. 3\/4 + 2\/4 = 5\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41007,"question":"La somme de deux nombres entiers négatifs est toujours négative.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme de deux nombres négatifs est toujours négative (ex: -3 + (-2) = -5).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41008,"question":"Quelle est la valeur de x dans l'équation 2x - 5 = 7 ?","option_a":"6","option_b":"1","option_c":"4","option_d":"3","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x - 5 = 7 → 2x = 12 → x = 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41009,"question":"Le périmètre d'un carré de côté 5 cm est de 25 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le périmètre d'un carré est 4 × côté. Ici, 4 × 5 = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41010,"question":"Quelle est la fraction irréductible équivalente à 12\/18 ?","option_a":"2\/3","option_b":"6\/9","option_c":"4\/6","option_d":"3\/4","option_e":"","option_f":"","bonne_reponse":"A","explication":"12\/18 = (12÷6)\/(18÷6) = 2\/3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41011,"question":"L'aire d'un rectangle de longueur 8 cm et de largeur 3 cm est de 24 cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Aire = longueur × largeur = 8 × 3 = 24 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41012,"question":"Quel est le résultat de 0,75 × 8 ?","option_a":"6","option_b":"5,6","option_c":"6,5","option_d":"5","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,75 × 8 = 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41013,"question":"La division de deux nombres décimaux peut donner un résultat entier.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Exemple : 4,5 ÷ 1,5 = 3 (résultat entier).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41014,"question":"Quelle est la valeur de y dans l'équation 3y + 9 = 0 ?","option_a":"-3","option_b":"3","option_c":"-1","option_d":"1","option_e":"","option_f":"","bonne_reponse":"A","explication":"3y + 9 = 0 → 3y = -9 → y = -3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":41015,"question":"Le volume d'un cube d'arête 2 cm est de 8 cm³.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Volume = arête³ = 2³ = 8 cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]