Translation of "10살" in English

10살 짜리 아이에게 많은 일들이 일어났습니다.

I know there was a lot going on in my little 10-year-old mind.

제가 10살 때 제 동생은 6살 이었습니다.

when I was ten, my brother was six,

제가 10살 때, 오케스트라에 들어가고 싶다고 말했을 때

So when I was 10 years old, I told them that I wanted to join orchestra,