Quiz Mathématiques — 7ème année : Arithmétique et Géométrie

Question 1 sur 10 10:00

[{"id":48861,"question":"Quel est le résultat de l'opération 125,6 ÷ 10 ?","option_a":"12,56","option_b":"1256","option_c":"1,256","option_d":"12560","option_e":"","option_f":"","bonne_reponse":"A","explication":"Diviser par 10 décale la virgule d'un rang vers la gauche. 125,6 ÷ 10 = 12,56.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48862,"question":"Un carré a un côté de 5 cm. Son périmètre est-il égal à 20 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 P = 4 × côté. Ici, 4 × 5 = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48863,"question":"Quelle est la fraction irréductible de 18\/24 ?","option_a":"3\/4","option_b":"6\/8","option_c":"9\/12","option_d":"2\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Simplifier 18\/24 en divisant numérateur et dénominateur par 6 donne 3\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48864,"question":"L'aire d'un rectangle de longueur 8 cm et de largeur 5 cm est-elle de 40 cm² ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","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":48865,"question":"Quel est le résultat de 3\/4 + 1\/2 ?","option_a":"4\/6","option_b":"5\/4","option_c":"7\/8","option_d":"1","option_e":"","option_f":"","bonne_reponse":"B","explication":"Convertir 1\/2 en 2\/4 pour avoir un dénominateur commun : 3\/4 + 2\/4 = 5\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48866,"question":"Un triangle rectangle a des côtés de 3 cm, 4 cm et 5 cm. Est-il un triangle rectangle ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Vérifier le théorème de Pythagore : 3² + 4² = 5² (9 + 16 = 25).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48867,"question":"Quelle est la valeur de 25% de 80 ?","option_a":"20","option_b":"16","option_c":"10","option_d":"5","option_e":"","option_f":"","bonne_reponse":"A","explication":"25% de 80 = (25\/100) × 80 = 20.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48868,"question":"L'aire d'un disque de rayon 3 cm est-elle de 9π cm² ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'aire d'un disque se calcule par A = π × r². Ici, π × 3² = 9π cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48869,"question":"Quel est le résultat de 0,75 × 8 ?","option_a":"6","option_b":"5,6","option_c":"6,5","option_d":"0,6","option_e":"","option_f":"","bonne_reponse":"A","explication":"0,75 × 8 = 6 (car 0,75 = 3\/4 et 3\/4 × 8 = 6).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":48870,"question":"Un parallélogramme a des côtés de 6 cm et 4 cm. Son périmètre est-il de 20 cm ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le périmètre d'un parallélogramme se calcule par P = 2 × (longueur + largeur). Ici, 2 × (6 + 4) = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]