Quiz — Exercice 2 A1 correction.pdf

Question 1 sur 10 20:00

[{"id":64976,"question":"Quel est le résultat de l'opération 45,6 × 10 ?","option_a":"4,56","option_b":"456","option_c":"4560","option_d":"0,456","option_e":"","option_f":"","bonne_reponse":"b","explication":"Multiplier un nombre décimal par 10 décale la virgule d'un rang vers la droite. Ainsi, 45,6 × 10 = 456.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"4,56\", \"b\": \"456\", \"c\": \"4560\", \"d\": \"0,456\"}}","_debug_options_count":4},{"id":64977,"question":"Un angle de 90° est appelé ...","option_a":"angle aigu","option_b":"angle droit","option_c":"angle obtus","option_d":"angle plat","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un angle de 90° est appelé angle droit, c'est une notion fondamentale en géométrie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"angle aigu\", \"b\": \"angle droit\", \"c\": \"angle obtus\", \"d\": \"angle ","_debug_options_count":4},{"id":64978,"question":"Vrai ou Faux ? 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 des triangles : la somme de leurs angles intérieurs est toujours égale à 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":64979,"question":"Quelle est la fraction irréductible de 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":"Pour simplifier 18\/24, on divise le numérateur et le dénominateur par leur PGCD, qui est 6. Ainsi, 18 ÷ 6 = 3 et 24 ÷ 6 = 4, d'où 3\/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\": \"3\/4\", \"b\": \"9\/12\", \"c\": \"6\/8\", \"d\": \"2\/3\"}}","_debug_options_count":4},{"id":64980,"question":"Vrai ou Faux ? Un quadrilatère avec deux côtés parallèles est toujours un parallélogramme.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un quadrilatère avec seulement deux côtés parallèles est un trapèze, mais pas nécessairement un parallélogramme (qui en a quatre).","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":64981,"question":"Quel est le résultat de 3\/4 + 1\/2 ?","option_a":"4\/6","option_b":"5\/4","option_c":"7\/8","option_d":"1","option_e":"","option_f":"","bonne_reponse":"b","explication":"Pour additionner ces fractions, on les met 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\": \"b\", \"options\": {\"a\": \"4\/6\", \"b\": \"5\/4\", \"c\": \"7\/8\", \"d\": \"1\"}}","_debug_options_count":4},{"id":64982,"question":"Vrai ou Faux ? Le périmètre d'un carré de côté 5 cm est de 25 cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le périmètre se mesure en cm (et non en cm²), il est égal à 4 × 5 = 20 cm. L'aire, elle, est de 25 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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":64983,"question":"Quelle est la valeur de x dans l'équation 2x + 3 = 7 ?","option_a":"x = 2","option_b":"x = 5","option_c":"x = 10","option_d":"x = 1","option_e":"","option_f":"","bonne_reponse":"a","explication":"En soustrayant 3 des deux côtés, on obtient 2x = 4, puis en divisant par 2, x = 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 = 2\", \"b\": \"x = 5\", \"c\": \"x = 10\", \"d\": \"x = 1\"}}","_debug_options_count":4},{"id":64984,"question":"Vrai ou Faux ? Un nombre divisible par 2 et par 3 est toujours divisible par 6.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Si un nombre est divisible par 2 et par 3, alors il est divisible par leur PPCM, qui est 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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":64985,"question":"Quel est le résultat de 5 × (3 + 2) ?","option_a":"25","option_b":"15","option_c":"10","option_d":"13","option_e":"","option_f":"","bonne_reponse":"b","explication":"Selon les règles de priorité des opérations, on calcule d'abord la parenthèse : 3 + 2 = 5, puis 5 × 5 = 25.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"25\", \"b\": \"15\", \"c\": \"10\", \"d\": \"13\"}}","_debug_options_count":4}]