Quiz — devoir mefte7.pdf

Question 1 sur 10 20:00

[{"id":7885,"question":"Quel est le résultat de 456 × 23 ?","option_a":"10 488","option_b":"10 478","option_c":"10 588","option_d":"10 498","option_e":"","option_f":"","bonne_reponse":"a","explication":"456 × 23 = 456 × (20 + 3) = (456 × 20) + (456 × 3) = 9 120 + 1 368 = 10 488.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"10 488\", \"b\": \"10 478\", \"c\": \"10 588\", \"d\": \"10 498\"}}","_debug_options_count":4},{"id":7886,"question":"Le périmètre d'un carré de côté 5 cm est de 20 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le périmètre d'un carré se calcule par 4 × côté. Donc 4 × 5 = 20 cm. L'affirmation est 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":7887,"question":"Quelle est l'aire d'un rectangle de longueur 8 cm et de largeur 5 cm ?","option_a":"40 cm²","option_b":"35 cm²","option_c":"45 cm²","option_d":"30 cm²","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'aire d'un rectangle se calcule par longueur × largeur. Donc 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"40 cm²\", \"b\": \"35 cm²\", \"c\": \"45 cm²\", \"d\": \"30 cm²\"}}","_debug_options_count":4},{"id":7888,"question":"Convertir 3,5 km en mètres.","option_a":"350 m","option_b":"3 500 m","option_c":"35 m","option_d":"35 000 m","option_e":"","option_f":"","bonne_reponse":"b","explication":"1 km = 1 000 m, donc 3,5 km = 3,5 × 1 000 = 3 500 m.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"350 m\", \"b\": \"3 500 m\", \"c\": \"35 m\", \"d\": \"35 000 m\"}}","_debug_options_count":4},{"id":7889,"question":"Un triangle rectangle a des côtés de 3 cm et 4 cm. Quelle est la longueur de l'hypoténuse ?","option_a":"5 cm","option_b":"6 cm","option_c":"7 cm","option_d":"8 cm","option_e":"","option_f":"","bonne_reponse":"a","explication":"D'après le théorème de Pythagore : hypoténuse² = 3² + 4² = 9 + 16 = 25. Donc hypoténuse = √25 = 5 cm.","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 cm\", \"b\": \"6 cm\", \"c\": \"7 cm\", \"d\": \"8 cm\"}}","_debug_options_count":4},{"id":7890,"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 par côté³. Donc 3³ = 27 cm³. L'affirmation est 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":7891,"question":"Quel est le résultat de 1 200 ÷ 25 ?","option_a":"48","option_b":"40","option_c":"52","option_d":"60","option_e":"","option_f":"","bonne_reponse":"a","explication":"1 200 ÷ 25 = (1 200 ÷ 5) ÷ 5 = 240 ÷ 5 = 48.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"48\", \"b\": \"40\", \"c\": \"52\", \"d\": \"60\"}}","_debug_options_count":4},{"id":7892,"question":"Un angle de 90° est appelé angle obtus.","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 obtus mesure entre 90° et 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":7893,"question":"Quelle est la somme des angles d'un triangle ?","option_a":"180°","option_b":"90°","option_c":"360°","option_d":"270°","option_e":"","option_f":"","bonne_reponse":"a","explication":"La somme des angles d'un triangle 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\": \"180°\", \"b\": \"90°\", \"c\": \"360°\", \"d\": \"270°\"}}","_debug_options_count":4},{"id":7894,"question":"Convertir 2,75 heures en minutes.","option_a":"165 minutes","option_b":"150 minutes","option_c":"180 minutes","option_d":"120 minutes","option_e":"","option_f":"","bonne_reponse":"a","explication":"1 heure = 60 minutes, donc 2,75 heures = 2 × 60 + 0,75 × 60 = 120 + 45 = 165 minutes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"165 minutes\", \"b\": \"150 minutes\", \"c\": \"180 minutes\", \"d\": \"120 m","_debug_options_count":4}]