Quiz : Maîtrisez la réduction des fractions en 6ème année

Question 1 sur 10 10:00

[{"id":73442,"question":"Quelle est la fraction réduite de 12\/18 ?","option_a":"2\/3","option_b":"4\/6","option_c":"6\/9","option_d":"1\/2","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le PGCD de 12 et 18 est 6. En divisant numérateur et dénominateur par 6, on obtient 2\/3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73443,"question":"La fraction 15\/25 est-elle déjà réduite ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le PGCD de 15 et 25 est 5. La fraction réduite est 3\/5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73444,"question":"Quel est le PGCD de 24 et 36 ?","option_a":"6","option_b":"12","option_c":"18","option_d":"24","option_e":"","option_f":"","bonne_reponse":"B","explication":"Les diviseurs communs sont 1, 2, 3, 4, 6, 12. Le plus grand est 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73445,"question":"La fraction 7\/14 peut être réduite à 1\/2. Vrai ou faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le PGCD de 7 et 14 est 7. En divisant par 7, on obtient bien 1\/2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73446,"question":"Quelle fraction n'est pas équivalente à 3\/4 ?","option_a":"6\/8","option_b":"9\/12","option_c":"12\/16","option_d":"15\/20","option_e":"","option_f":"","bonne_reponse":"D","explication":"15\/20 se réduit à 3\/4, donc elle est équivalente. Les autres options sont aussi équivalentes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73447,"question":"Peut-on réduire la fraction 5\/7 ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le PGCD de 5 et 7 est 1, donc la fraction est déjà sous sa forme irréductible.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73448,"question":"Quelle est la fraction réduite de 18\/24 ?","option_a":"3\/4","option_b":"6\/8","option_c":"9\/12","option_d":"1\/2","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le PGCD de 18 et 24 est 6. En divisant par 6, on obtient 3\/4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73449,"question":"La réduction d'une fraction change-t-elle sa valeur ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La réduction ne change pas la valeur de la fraction, elle la simplifie seulement.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73450,"question":"Quel est le PGCD de 10 et 25 ?","option_a":"2","option_b":"5","option_c":"10","option_d":"15","option_e":"","option_f":"","bonne_reponse":"B","explication":"Les diviseurs communs sont 1 et 5. Le plus grand est 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":73451,"question":"La fraction 8\/12 réduite est 2\/3. Vrai ou faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le PGCD de 8 et 12 est 4. En divisant par 4, on obtient 2\/3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]