Quiz interactif : Testez vos connaissances en mathématiques 7ème année !

Question 1 sur 10 10:00

[{"id":69232,"question":"Quel est le résultat de l'opération 3,5 + 2,75 ?","option_a":"6,25","option_b":"5,25","option_c":"6,35","option_d":"7,25","option_e":"","option_f":"","bonne_reponse":"A","explication":"3,5 + 2,75 = 6,25. Additionnez les parties entières (3 + 2 = 5) puis les décimales (0,5 + 0,75 = 1,25) pour obtenir 6,25.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69233,"question":"Un angle de 90° est appelé :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Un angle de 90° est bien appelé angle droit. C'est une définition fondamentale en géométrie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69234,"question":"Simplifiez la fraction 18\/24 :","option_a":"3\/4","option_b":"9\/12","option_c":"6\/8","option_d":"2\/3","option_e":"","option_f":"","bonne_reponse":"A","explication":"Divisez le numérateur et le dénominateur par leur PGCD (6) : 18 ÷ 6 = 3 et 24 ÷ 6 = 4, d'où 3\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69235,"question":"Résolvez l'équation x + 5 = 12 :","option_a":"x = 7","option_b":"x = 17","option_c":"x = 5","option_d":"x = 12","option_e":"","option_f":"","bonne_reponse":"A","explication":"Soustraire 5 des deux côtés : x = 12 - 5, donc x = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69236,"question":"Le périmètre d'un carré de côté 4 cm est :","option_a":"16 cm","option_b":"8 cm","option_c":"12 cm","option_d":"20 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"Périmètre = 4 × côté = 4 × 4 = 16 cm. Multipliez la longueur du côté par 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69237,"question":"30% de 50 est égal à :","option_a":"15","option_b":"10","option_c":"20","option_d":"25","option_e":"","option_f":"","bonne_reponse":"A","explication":"Calculez 30\/100 × 50 = 0,3 × 50 = 15. Multipliez le pourcentage (30) par le nombre (50) et divisez par 100.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69238,"question":"Un triangle isocèle a :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Vrai. Un triangle isocèle a deux côtés de même longueur et deux angles égaux.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69239,"question":"Calculez 7 × (3 + 2) :","option_a":"35","option_b":"23","option_c":"17","option_d":"41","option_e":"","option_f":"","bonne_reponse":"B","explication":"D'abord les parenthèses : 3 + 2 = 5, puis 7 × 5 = 35. Respectez les priorités opératoires.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69240,"question":"La somme des angles d'un triangle est toujours :","option_a":"180°","option_b":"90°","option_c":"360°","option_d":"100°","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme des angles d'un triangle est toujours 180°, c'est une propriété fondamentale de la géométrie plane.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":69241,"question":"Si x = 4, quelle est la valeur de 2x² ?","option_a":"32","option_b":"16","option_c":"64","option_d":"8","option_e":"","option_f":"","bonne_reponse":"A","explication":"Calculez d'abord x² = 4² = 16, puis 2 × 16 = 32. Appliquez les règles des puissances avant la multiplication.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]