Buuxi weedha soo socota: Exum wuxuu u ciyaaray xulka qaranka da'yarta Australia Koobka Adduunka ee FIBA Under-17 ee 2012, halkaas oo loogu magac daray Kooxda Tartanka oo dhan, iyo sidoo kale
2013 FIBA Under-19 World Cup, halkaas oo mar kale loogu magac daray Kooxda Tartanka oo dhan. Sanadkii 2013 ayaa sidoo kale lagu calaamadeeyay Exum kulankiisii ugu horeeyay ee xulka qaranka, isagoo ka hor yimid New Zealand 2013 FIBA Oceania Championship. Sannadkii 2014, wuxuu u ciyaaray Australia Koobkii Adduunka ee FIBA 2014, halkaas oo uu ku dhaliyay celcelis ahaan 2.7 dhibcood, 1.5 rebounds iyo 2.0 caawin lix kulan.