When you tell time, you need to mix two number sets – native and Sino-Korean numbers. As a memory exercise, I said the numbers 1:01, 2:02, 3:03, etc. in sentences. 한 시 일 분 이에요. When I found it difficult, I decided I needed some flashcards that put the two numbers together, which led me to think of two dancing partners, which led to these flashcards.
Homemade Flashcards on Memrise