Native Korean Tens (20–90) & Expressing Age (살 / 세)

Conjugation & Pattern

• 20: 스물 (스무 살) | 30: 서른 | 40: 마흔 | 50: 쉰
• 60: 예순 | 70: 일흔 | 80: 여든 | 90: 아흔 | 100+ uses Sino-Korean (백)
• Native Korean number + 살 (everyday age) / Sino-Korean number + 세 (formal age)

Detailed Usage

Used to count people, items, or state ages from 20 to 99. Note that 20 ('스물') shortens to '스무' directly before a counter noun (e.g., 스무 살, 스무 명).

Example Sentences

1. 1

   제 동생은 올해 스무 살이에요.

   Je dongsaengeun olhae seumu sarieyo.

   My younger sibling is twenty years old this year.

2. 2

   우리 아버지는 마흔다섯 살이십니다.

   Uri abeojineun maheundaseot sarisimnida.

   My father is forty-five years old.

3. 3

   교실에 의자가 서른두 개 있습니다.

   Gyosire uijaga seoreundu gae itseumnida.

   There are thirty-two chairs in the classroom.