When to use addition in Korean
Korean: 추가[ chu-ga ]

When to use it
Addition means putting one more thing in or making something bigger. In everyday Korean, (추가) often means extra homework, extra food, or an extra item. You use it when something is added after the first amount or plan.
Example sentences
선생님이 추가 숙제를 주셨어요.
The teacher gave us extra homework.
이 문제에 추가 설명이 필요해요.
This problem needs extra explanation.
엄마가 가방에 공책을 추가했어요.
Mom added a notebook to the bag.
저는 밥을 추가로 주문했어요.
I ordered extra rice.
우리는 여행 전에 물을 추가로 샀어요.
We bought extra water before the trip.
치즈 추가는 천 원이에요.
Extra cheese is 1,000 won.