The Native Korean numbers are used when you say your age, tell the time or count something in Korean.And this system is only needed to tell the numbers from 1 to 99. Bigger numbers (like 100 for instance) existed in the past in native Korean numbers but they are no longer used. So all you have to remember is the numbers between 1~99. Therefore, it would be much easier for you to memorize these numbers compared to the Sino Korean Numbers