Quiz Mathématiques — 7ème année : Arithmétique et Géométrie

Question 1 sur 10 10:00

[{"id":54121,"question":"Quel est le résultat de l'opération suivante : 125 + 47 - 32 ?","option_a":"140","option_b":"130","option_c":"145","option_d":"135","option_e":"","option_f":"","bonne_reponse":"A","explication":"125 + 47 = 172, puis 172 - 32 = 140.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54122,"question":"Vrai ou Faux : Le périmètre d'un carré de côté 5 cm est de 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 4 × côté. Ici, 4 × 5 = 20 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54123,"question":"Quelle est la fraction irréductible équivalente à 18\/24 ?","option_a":"3\/4","option_b":"2\/3","option_c":"9\/12","option_d":"6\/8","option_e":"","option_f":"","bonne_reponse":"A","explication":"On divise le numérateur et le dénominateur par leur PGCD, qui est 6 : 18 ÷ 6 = 3 et 24 ÷ 6 = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54124,"question":"Calculez l'aire d'un rectangle de longueur 8 cm et de largeur 5 cm.","option_a":"40 cm²","option_b":"30 cm²","option_c":"20 cm²","option_d":"60 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un rectangle se calcule par longueur × largeur. Ici, 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54125,"question":"Vrai ou Faux : 0,75 est égal à 3\/4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","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":54126,"question":"Quel est le résultat de 3\/5 + 1\/10 ?","option_a":"4\/10","option_b":"7\/10","option_c":"3\/10","option_d":"4\/5","option_e":"","option_f":"","bonne_reponse":"B","explication":"On met les fractions au même dénominateur : 3\/5 = 6\/10, puis 6\/10 + 1\/10 = 7\/10.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54127,"question":"Un triangle a une base de 6 cm et une hauteur de 4 cm. Quelle est son aire ?","option_a":"12 cm²","option_b":"24 cm²","option_c":"10 cm²","option_d":"8 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un triangle se calcule par (base × hauteur) \/ 2. Ici, (6 × 4) \/ 2 = 12 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54128,"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":"La règle des signes indique que le produit de deux nombres négatifs est positif.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54129,"question":"Quelle est la valeur de x dans l'équation : 2x + 5 = 15 ?","option_a":"x = 5","option_b":"x = 10","option_c":"x = 3","option_d":"x = 7","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x + 5 = 15 → 2x = 10 → x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":54130,"question":"Quel est le volume d'un cube de côté 3 cm ?","option_a":"9 cm³","option_b":"27 cm³","option_c":"12 cm³","option_d":"18 cm³","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le volume d'un cube se calcule par côté³. Ici, 3³ = 27 cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]