Quiz — 6338d942b9c76_13) Exercice 3 type devoir.pdf

Question 1 sur 10 20:00

[{"id":27540,"question":"Quel est le résultat de l'opération suivante : 3\/4 + 1\/2 ?","option_a":"5\/4","option_b":"4\/6","option_c":"2\/3","option_d":"7\/8","option_e":"","option_f":"","bonne_reponse":"a","explication":"Pour additionner deux fractions, il faut les mettre au même dénominateur. 3\/4 + 2\/4 = 5\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"5\/4\", \"b\": \"4\/6\", \"c\": \"2\/3\", \"d\": \"7\/8\"}}","_debug_options_count":4},{"id":27541,"question":"L'équation 2x + 3 = 7 a pour solution x = 2.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"2x + 3 = 7 → 2x = 4 → x = 2. L'affirmation est donc vraie.","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":27542,"question":"Quel est le périmètre d'un carré de côté 5 cm ?","option_a":"10 cm","option_b":"20 cm","option_c":"25 cm","option_d":"50 cm","option_e":"","option_f":"","bonne_reponse":"b","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,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"10 cm\", \"b\": \"20 cm\", \"c\": \"25 cm\", \"d\": \"50 cm\"}}","_debug_options_count":4},{"id":27543,"question":"Si 20% d'un nombre est égal à 10, quel est ce nombre ?","option_a":"20","option_b":"50","option_c":"100","option_d":"200","option_e":"","option_f":"","bonne_reponse":"b","explication":"20% × x = 10 → x = 10 \/ 0.20 = 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\": \"20\", \"b\": \"50\", \"c\": \"100\", \"d\": \"200\"}}","_debug_options_count":4},{"id":27544,"question":"La somme des angles d'un triangle est toujours égale à 180°.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"C'est une propriété fondamentale de la géométrie plane. La somme des angles d'un triangle est toujours 180°.","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":27545,"question":"Quel est le résultat de l'expression : 5 × (3 + 2) - 4 ?","option_a":"21","option_b":"11","option_c":"26","option_d":"9","option_e":"","option_f":"","bonne_reponse":"a","explication":"On commence par les parenthèses : 3 + 2 = 5. Puis 5 × 5 = 25. Enfin 25 - 4 = 21.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"21\", \"b\": \"11\", \"c\": \"26\", \"d\": \"9\"}}","_debug_options_count":4},{"id":27546,"question":"Un rectangle a une longueur de 8 cm et une largeur de 3 cm. Quelle est son aire ?","option_a":"11 cm²","option_b":"24 cm²","option_c":"22 cm²","option_d":"16 cm²","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'aire d'un rectangle se calcule par longueur × largeur. Ici, 8 × 3 = 24 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"11 cm²\", \"b\": \"24 cm²\", \"c\": \"22 cm²\", \"d\": \"16 cm²\"}}","_debug_options_count":4},{"id":27547,"question":"Pour résoudre l'équation 3x - 5 = 10, on ajoute 5 des deux côtés.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"3x - 5 = 10 → 3x = 15 (en ajoutant 5 des deux côtés). L'affirmation est donc vraie.","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":27548,"question":"Quel est le résultat de 0,75 × 8 ?","option_a":"6","option_b":"5,6","option_c":"6,4","option_d":"5,2","option_e":"","option_f":"","bonne_reponse":"a","explication":"0,75 × 8 = 6. On peut aussi voir 0,75 comme 3\/4, donc 3\/4 × 8 = 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"6\", \"b\": \"5,6\", \"c\": \"6,4\", \"d\": \"5,2\"}}","_debug_options_count":4},{"id":27549,"question":"Un cercle a un rayon de 4 cm. Quelle est sa circonférence (arrondie à l'unité) ?","option_a":"12 cm","option_b":"25 cm","option_c":"13 cm","option_d":"24 cm","option_e":"","option_f":"","bonne_reponse":"c","explication":"La circonférence d'un cercle se calcule par 2 × π × rayon. Ici, 2 × 3,14 × 4 ≈ 25,12 cm, arrondi à 25 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"12 cm\", \"b\": \"25 cm\", \"c\": \"13 cm\", \"d\": \"24 cm\"}}","_debug_options_count":4}]