Quiz — 65e0b20d73e61_énoncé_Série 43 les nombres + approximation (4).pdf

Question 1 sur 10 20:00

[{"id":27610,"question":"Quelle est l'approximation par défaut à l'unité près de 7,89 ?","option_a":"7","option_b":"7,8","option_c":"8","option_d":"7,9","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'approximation par défaut à l'unité près de 7,89 est 7, car c'est le nombre entier inférieur le plus proche.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"7\", \"b\": \"7,8\", \"c\": \"8\", \"d\": \"7,9\"}}","_debug_options_count":4},{"id":27611,"question":"L'arrondi à 0,01 près de 3,14159 est 3,14.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'arrondi à 0,01 près de 3,14159 est bien 3,14, car le chiffre suivant (5) est égal à 5, ce qui arrondit le chiffre précédent (4) à 5.","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":27612,"question":"Quelle est la troncature à 0,1 près de 5,678 ?","option_a":"5,6","option_b":"5,7","option_c":"5,67","option_d":"5,68","option_e":"","option_f":"","bonne_reponse":"a","explication":"La troncature à 0,1 près de 5,678 est 5,6, car on supprime les chiffres après le premier chiffre après la virgule sans arrondir.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"5,6\", \"b\": \"5,7\", \"c\": \"5,67\", \"d\": \"5,68\"}}","_debug_options_count":4},{"id":27613,"question":"L'approximation de √2 par 1,414 est une approximation par excès.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"1,414 est une approximation par défaut de √2, car √2 ≈ 1,41421356..., donc 1,414 est inférieur à la valeur réelle.","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":27614,"question":"Quelle est l'approximation à 10 près de 1234 ?","option_a":"1200","option_b":"1230","option_c":"1240","option_d":"1300","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'approximation à 10 près de 1234 est 1230, car on arrondit à la dizaine la plus proche.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"1200\", \"b\": \"1230\", \"c\": \"1240\", \"d\": \"1300\"}}","_debug_options_count":4},{"id":27615,"question":"La troncature de 9,999 à 0,01 près est 9,99.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La troncature de 9,999 à 0,01 près est 9,99, car on supprime les chiffres après le deuxième chiffre après la virgule sans arrondir.","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":27616,"question":"Quelle est l'approximation par excès à l'unité près de 4,3 ?","option_a":"4","option_b":"5","option_c":"4,3","option_d":"4,4","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'approximation par excès à l'unité près de 4,3 est 5, car c'est le nombre entier supérieur le plus proche.","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\", \"b\": \"5\", \"c\": \"4,3\", \"d\": \"4,4\"}}","_debug_options_count":4},{"id":27617,"question":"L'arrondi à 0,1 près de 2,65 est 2,7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'arrondi à 0,1 près de 2,65 est 2,7, car le chiffre suivant (5) arrondit le chiffre précédent (6) à 7.","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":27618,"question":"Quelle est la troncature à 1 près de 15,78 ?","option_a":"15","option_b":"16","option_c":"15,7","option_d":"15,8","option_e":"","option_f":"","bonne_reponse":"a","explication":"La troncature à 1 près de 15,78 est 15, car on supprime les chiffres après la virgule sans arrondir.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"15\", \"b\": \"16\", \"c\": \"15,7\", \"d\": \"15,8\"}}","_debug_options_count":4},{"id":27619,"question":"L'approximation de π par 3,14 est une approximation par défaut.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"3,14 est une approximation par défaut de π, car π ≈ 3,14159..., donc 3,14 est inférieur à la valeur réelle.","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}]