Quiz interactif : Mathématiques 4ème année primaire

Question 1 sur 10 10:00

[{"id":11138,"question":"Quel est le résultat de 245 + 137 ?","option_a":"372","option_b":"382","option_c":"392","option_d":"402","option_e":"","option_f":"","bonne_reponse":"B","explication":"245 + 137 = 382. Additionnez les unités (5+7=12, retenez 1), puis les dizaines (4+3+1=8) et enfin les centaines (2+1=3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11139,"question":"Un rectangle a une longueur de 8 cm et une largeur de 5 cm. Quel est son périmètre ?","option_a":"26 cm","option_b":"30 cm","option_c":"24 cm","option_d":"13 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le périmètre d'un rectangle se calcule avec la formule P = 2 × (longueur + largeur). Ici, P = 2 × (8 + 5) = 26 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11140,"question":"Vrai ou Faux : 3,5 kg = 350 g","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"3,5 kg = 3500 g (car 1 kg = 1000 g). 350 g est donc 10 fois moins que 3,5 kg.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11141,"question":"Quel est le résultat de 15 × 12 ?","option_a":"160","option_b":"170","option_c":"180","option_d":"190","option_e":"","option_f":"","bonne_reponse":"C","explication":"15 × 12 = 180. Vous pouvez décomposer : 15 × 10 = 150 et 15 × 2 = 30, puis additionnez 150 + 30 = 180.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11142,"question":"Vrai ou Faux : Un carré a tous ses côtés de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Un carré est un quadrilatère régulier : tous ses côtés sont égaux et tous ses angles sont droits.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11143,"question":"Quel est le résultat de 504 ÷ 6 ?","option_a":"80","option_b":"84","option_c":"90","option_d":"94","option_e":"","option_f":"","bonne_reponse":"B","explication":"504 ÷ 6 = 84. Vous pouvez vérifier en multipliant 84 × 6 = 504.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11144,"question":"Vrai ou Faux : 1 litre = 100 centilitres","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"1 litre = 100 centilitres (car 1 L = 100 cL). Cette conversion est correcte.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11145,"question":"Quel est le résultat de 7 × 8 + 5 ?","option_a":"56","option_b":"61","option_c":"66","option_d":"71","option_e":"","option_f":"","bonne_reponse":"B","explication":"Respectez les priorités opératoires : d'abord la multiplication (7 × 8 = 56), puis l'addition (56 + 5 = 61).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11146,"question":"Vrai ou Faux : Un triangle isocèle a deux côtés de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Un triangle isocèle possède deux côtés de même longueur et deux angles égaux. C'est une propriété fondamentale de cette figure.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":11147,"question":"Quel est le résultat de 120 - 45 ?","option_a":"65","option_b":"75","option_c":"85","option_d":"95","option_e":"","option_f":"","bonne_reponse":"B","explication":"120 - 45 = 75. Soustrayez les unités (0-5, empruntez 1 dizaine : 10-5=5), puis les dizaines (1-4, empruntez 1 centaine : 11-4=7) et enfin les centaines (0).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]