number
일
one
Number forms
1Sino-Korean
일
one
Used for dates, money, phone numbers, minutes, and larger numbers.
Native Korean
하나
one
Counter form: 한
Used for age, counting people or things, and hours.
Example
사과가 일 개 있어요.
There is one apple.
Note
일 is the Sino-Korean number one; use it in dates, money, and phone numbers.