{"schema_version":3,"id":"home-frac-011","url":"/questions/home-frac-011/","theme":"fractions","parcours":"commun|spe|ens_sci|techno","niveau":2,"type":"qcm","consigne":"Retrouve le total à partir de la fraction connue.","amorce":"21 représente \\(\\frac{3}{4}\\) de quel nombre ?","choices":["28","7","63","84"],"reponse":"28","correction":{"repere":"La quantité 21 représente 3 parts sur 4 parts égales du total recherché.","agis":"Divise 21 par 3 pour trouver une part, puis multiplie par 4 pour retrouver le total.","pourquoi":"3 parts valent 21, donc une part vaut 21 ÷ 3 = 7 ; les 4 parts du total valent 7 × 4 = 28.","verification":"Recalcule \\(\\frac{3}{4}\\) du total trouvé : 28 ÷ 4 × 3 = 21."},"empreinte":"85418fabca47bbe9ed8fffb8b2262ae311c8e3f034de0f4eba372142c1be9fe5","canonical_url":"https://unpointdeplus.com/questions/home-frac-011/","memberships":[{"set_id":"fractions-quantites","titre":"Fractions : de la part au total","etape":"Retrouver le total : trois parts connues","position":11,"total":12,"set_url":"https://unpointdeplus.com/sets/fractions-quantites/","url":"https://unpointdeplus.com/questions/home-frac-011/"}],"navigation":{"set_id":"fractions-quantites","titre":"Fractions : de la part au total","position":11,"total":12,"revision":"1-46d6396235c5fb9155e1afe9-nav-4f53cda18c2baa0c","up":{"kind":"set","id":"fractions-quantites","label":"Présentation du set","url":"https://unpointdeplus.com/sets/fractions-quantites/"},"previous":{"kind":"question","id":"home-frac-010","label":"← Question précédente","url":"https://unpointdeplus.com/questions/home-frac-010/"},"next":{"kind":"question","id":"home-frac-012","label":"Question suivante →","url":"https://unpointdeplus.com/questions/home-frac-012/"}}}