"sum sth up" in German to sum sth. up zusammenzählen hinzuzählen addieren summieren Detailed translations for "sum sth up" to sum sth. up to sum sth. up(also: to add sth., to total sth. up) zusammenzählen to sum sth. up(also: to add sth., to total sth. up) hinzuzählen to sum sth. up(also: to add sth., to total sth. up) addieren to sum sth. up(also: to add sth., to total sth. up) summieren{transitive verb}