Pedzisa mutsara unotevera: Exum akatambira timu yenyika yeAustralia yechidiki pa2012 FIBA Under-17 World Cup, kwaakatumidzwa zita reAll-Tournament Team, pamwe ne
2013 FIBA Under-19 World Cup, kwaakadanwa zvakare kuAll-Tournament Team. 2013 yakaratidzawo kutanga kwaExum kwechikwata chevakuru chenyika, vachitamba neNew Zealand pa2013 FIBA Oceania Championship. Muna 2014, akatamba kuAustralia ku2014 FIBA World Cup, kwaakawana mavara 2.7 mapoinzi, 1.5 rebounds uye 2.0 anobatsira mumitambo mitanhatu.