N쯤 — about, around, approximately

쯤 is added to nouns denoting numbers, quantities, and time to indicate approximation. It corresponds to 'about' or 'around' in English.

Details

When referring to approximate prices, 'Noun쯤 하다' is used more often than 'Noun 쯤이다'.

A: 사과가 요즘 얼마쯤 해요?

About how much are apples these days?

B: 요즘 3개에 2,000원쯤 해요.

Recently they cost about 2,000 won for three.

A: 중국까지 비행기 표가 얼마쯤 해요?

About how much is the airfare to China?

B: 글쎄요. 300.000원쯤 할 거예요.

Um, it will probably cost around 300,000 won.

Used after nouns indicating numbers, quantities, and time to express approximation.

Details

Note: There is also 정도 (noun) that can be used as it is similar to 쯤 (Approximation).