Maths 7ème : Testez vos connaissances en algèbre et calcul

Question 1 sur 10 10:00

[{"id":26578,"question":"Quel est le résultat de l'expression 3 × (4 + 2) ?","option_a":"18","option_b":"14","option_c":"24","option_d":"10","option_e":"","option_f":"","bonne_reponse":"A","explication":"On applique d'abord la règle des parenthèses : 4 + 2 = 6, puis on multiplie par 3 : 3 × 6 = 18.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26579,"question":"L'équation x + 5 = 12 a pour solution x = 7.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Si x + 5 = 12, alors x = 12 - 5 = 7. La solution est donc correcte.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26580,"question":"Quelle est la valeur de l'expression 2a + 3b si a = 4 et b = 1 ?","option_a":"11","option_b":"10","option_c":"14","option_d":"8","option_e":"","option_f":"","bonne_reponse":"A","explication":"En remplaçant a par 4 et b par 1, on obtient : 2 × 4 + 3 × 1 = 8 + 3 = 11.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26581,"question":"La multiplication est commutative : 3 × 5 = 5 × 3.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La multiplication est commutative, ce qui signifie que l'ordre des facteurs ne change pas le résultat.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26582,"question":"Quel est le résultat de 15 ÷ 3 + 2 ?","option_a":"7","option_b":"5","option_c":"9","option_d":"11","option_e":"","option_f":"","bonne_reponse":"A","explication":"On effectue d'abord la division : 15 ÷ 3 = 5, puis on ajoute 2 : 5 + 2 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26583,"question":"L'expression 4 × (2 + 3) est égale à 4 × 2 + 3.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La première expression donne 4 × 5 = 20, tandis que la seconde donne 8 + 3 = 11. Les résultats sont différents, donc l'affirmation est fausse.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26584,"question":"Quelle est la solution de l'équation 2x - 4 = 10 ?","option_a":"7","option_b":"6","option_c":"8","option_d":"5","option_e":"","option_f":"","bonne_reponse":"A","explication":"On ajoute 4 des deux côtés : 2x = 14, puis on divise par 2 : x = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26585,"question":"La soustraction est associative : (10 - 5) - 2 = 10 - (5 - 2).","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le premier calcul donne 5 - 2 = 3, le second donne 10 - 3 = 7. Les résultats sont différents, donc l'affirmation est fausse.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26586,"question":"Quel est le résultat de l'expression (6 + 2) × 3 ?","option_a":"24","option_b":"18","option_c":"20","option_d":"12","option_e":"","option_f":"","bonne_reponse":"A","explication":"On commence par les parenthèses : 6 + 2 = 8, puis on multiplie par 3 : 8 × 3 = 24.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":26587,"question":"L'équation 3y = 15 a pour solution y = 5.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"En divisant les deux côtés par 3, on obtient y = 15 ÷ 3 = 5. La solution est donc correcte.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]