Quiz — 6730dd60b1f94_révision pour DC1-.pdf

Question 1 sur 10 20:00

[{"id":70697,"question":"Quel est le résultat de l'opération 12,5 × 4 ?","option_a":"48","option_b":"50","option_c":"52","option_d":"55","option_e":"","option_f":"","bonne_reponse":"b","explication":"12,5 × 4 = 50. Multiplier un nombre décimal par 4 revient à le multiplier par 2 deux fois de suite (12,5 × 2 = 25, puis 25 × 2 = 50).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"48\", \"b\": \"50\", \"c\": \"52\", \"d\": \"55\"}}","_debug_options_count":4},{"id":70698,"question":"Dans un triangle rectangle, le carré de l'hypoténuse est égal à la somme des carrés des deux autres côtés.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C'est l'énoncé du théorème de Pythagore, une propriété fondamentale en géométrie pour les triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":70699,"question":"Quelle est la valeur de x dans l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 6","option_c":"x = 7","option_d":"x = 8","option_e":"","option_f":"","bonne_reponse":"a","explication":"3x + 5 = 20 → 3x = 15 → x = 5. Il faut isoler x en soustrayant 5 des deux côtés puis diviser par 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"x = 5\", \"b\": \"x = 6\", \"c\": \"x = 7\", \"d\": \"x = 8\"}}","_debug_options_count":4},{"id":70700,"question":"Un parallélogramme a des diagonales qui se coupent en leur milieu.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C'est une propriété caractéristique des parallélogrammes : leurs diagonales se coupent en leur milieu et se partagent en deux segments égaux.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":70701,"question":"Quel est le périmètre d'un carré de côté 7 cm ?","option_a":"21 cm","option_b":"28 cm","option_c":"35 cm","option_d":"42 cm","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le périmètre d'un carré se calcule avec la formule P = 4 × côté. Ici, 4 × 7 = 28 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"21 cm\", \"b\": \"28 cm\", \"c\": \"35 cm\", \"d\": \"42 cm\"}}","_debug_options_count":4},{"id":70702,"question":"La fraction 3\/4 est équivalente à 0,75.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"3 divisé par 4 donne 0,75. Pour convertir une fraction en nombre décimal, il suffit de diviser le numérateur par le dénominateur.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":70703,"question":"Quel est le résultat de 15% de 80 ?","option_a":"10","option_b":"12","option_c":"14","option_d":"16","option_e":"","option_f":"","bonne_reponse":"b","explication":"15% de 80 = (15\/100) × 80 = 12. Pour calculer un pourcentage, multipliez le nombre par le pourcentage divisé par 100.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"10\", \"b\": \"12\", \"c\": \"14\", \"d\": \"16\"}}","_debug_options_count":4},{"id":70704,"question":"Un angle de 90° est appelé un angle plat.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un angle de 90° est un angle droit. Un angle plat mesure 180°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":70705,"question":"Quelle est la solution de l'inéquation 2x - 3 \u003E 7 ?","option_a":"x \u003E 5","option_b":"x \u003E 6","option_c":"x \u003E 7","option_d":"x \u003E 8","option_e":"","option_f":"","bonne_reponse":"a","explication":"2x - 3 \u003E 7 → 2x \u003E 10 → x \u003E 5. Il faut isoler x en ajoutant 3 des deux côtés puis diviser par 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"x \u003E 5\", \"b\": \"x \u003E 6\", \"c\": \"x \u003E 7\", \"d\": \"x \u003E 8\"}}","_debug_options_count":4},{"id":70706,"question":"Le volume d'un cube de côté 3 cm est de 27 cm³.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le volume d'un cube se calcule avec la formule V = côté³. Ici, 3 × 3 × 3 = 27 cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4}]