One vs. First: Why Koreans Have Two Number Systems
β A Coffee Shop Mystery
You walk into a Seoul cafe. You learned numbers in class: μΌ, μ΄, μΌβ¦ Easy, right?
Then the person ahead of you says:
Wait. λ? What happened to μ΄? Did your textbook lie to you?
Nope. Korean just has two completely different number systems. And Koreans mix them β sometimes in the same sentence.
Don’t panic. By the end of this post, you’ll know exactly which one to use and when.
π Two Systems, One Language
Here’s the deal. Korean has:
- Native Korean numbers (κ³ μ μ΄ μμ¬, goyueo susa) β νλ, λ, μ β¦ The original Korean numbers. Been around forever.
- Sino-Korean numbers (νμμ΄ μμ¬, hanjaeo susa) β μΌ, μ΄, μΌβ¦ Borrowed from Chinese characters centuries ago.
Both are 100% Korean. Neither is “more correct.” They just have different jobs.
π¦ Sino-Korean = dates, minutes, money, phone numbers π’
π Side-by-Side: 1 to 10
| π’ Number | π°π· Native Korean | π― Sino-Korean |
|---|---|---|
| 1οΈβ£ | νλ (hana) | μΌ (il) |
| 2οΈβ£ | λ (dul) | μ΄ (i) |
| 3οΈβ£ | μ (set) | μΌ (sam) |
| 4οΈβ£ | λ· (net) | μ¬ (sa) |
| 5οΈβ£ | λ€μ― (daseot) | μ€ (o) |
| 6οΈβ£ | μ¬μ― (yeoseot) | μ‘ (yuk) |
| 7οΈβ£ | μΌκ³± (ilgop) | μΉ (chil) |
| 8οΈβ£ | μ¬λ (yeodeol) | ν (pal) |
| 9οΈβ£ | μν (ahop) | ꡬ (gu) |
| π | μ΄ (yeol) | μ (sip) |
π The Cheat Sheet: When to Use Which
| π Situation | π°π· System | π¬ Example |
|---|---|---|
| π Age | Native Korean | μ€λ¬Όλ€μ― μ΄ (seumul-daseot sal) = 25 years old |
| π Hours | Native Korean | μΈ μ (se si) = 3 o’clock |
| π¦ Counting things | Native Korean | μ¬κ³Ό λ€ κ° (sagwa ne gae) = 4 apples |
| π₯ People | Native Korean | λ λͺ (du myeong) = 2 people |
| π Dates | Sino-Korean | μΌμ νμΌ (samwol paril) = March 8th |
| β± Minutes | Sino-Korean | μΌμ λΆ (samsip bun) = 30 minutes |
| π Phone numbers | Sino-Korean | 곡μΌκ³΅ (gong-il-gong) = 010 |
| π° Money | Sino-Korean | μ€μ² μ (ocheon won) = 5,000 won |
| π’ Floors | Sino-Korean | μΌ μΈ΅ (sam cheung) = 3rd floor |
And here’s the killer example β both systems in one sentence:
μΈ (Native Korean) for the hour. μΌμ (Sino-Korean) for the minutes. Same sentence. Welcome to Korean. π
π A Classroom Story
π Student: “μ λ μ΄μμ€ μ΄μ΄μμ.” (jeoneun isibo sarieyo)
π§βπ« Teacher Seoul: “Hmm, everyone will understand you. But it sounds a bitβ¦ robotic. Try this:”
π§βπ« Teacher Seoul: “μ λ μ€λ¬Όλ€μ― μ΄μ΄μμ.” (jeoneun seumul-daseot sarieyo)
π Student: “What’s the difference?”
π§βπ« Teacher Seoul: “μ΄μμ€ μ΄ is like saying ‘I am twenty-five years of age’ in English. Technically fine, but nobody talks like that at a party!”
β οΈ Common Mistakes (and How to Dodge Them)
1. “Il Si” vs. “Han Si” β The 1 O’Clock Trap
For 1 o’clock, it’s ν μ (han si), NOT μΌ μ. Hours use Native Korean, remember?
2. The Sneaky Short Forms
When Native Korean numbers appear before a counter, some of them shorten:
| π’ Full Form | βοΈ Short Form | π¬ Example |
|---|---|---|
| π°π· νλ | ν (han) | ν κ° (han gae) = one thing |
| π°π· λ | λ (du) | λ λͺ (du myeong) = two people |
| π°π· μ | μΈ (se) | μΈ μ (se si) = three o’clock |
| π°π· λ· | λ€ (ne) | λ€ μ (ne jan) = four cups |
| π°π· μ€λ¬Ό | μ€λ¬΄ (seumu) | μ€λ¬΄ μ΄ (seumu sal) = twenty years old |
3. Big Numbers = Sino-Korean Territory
Native Korean numbers technically go up to 99, but honestly? Past about 50, most Koreans switch to Sino-Korean in casual speech. Nobody says μΌνμ¬λ (ilheun-yeodeol, 78 in Native Korean) out loud. That’s just cruel.
βοΈ Practice Time!
Round 1 β Easy β
You want 3 cups of coffee. How do you say “three cups”?
Show Answer π
β μΈ μ (se jan) β Counting things = Native Korean! And μ shortens to μΈ before a counter.
Round 2 β Medium π
How do you say 5:15 in Korean?
Show Answer π
β λ€μ― μ μμ€ λΆ (daseot si sibo bun) β Hours (λ€μ―, Native Korean) + Minutes (μμ€, Sino-Korean). Both systems in one phrase!
Round 3 β Challenge π
Introduce yourself: “I’m 22 years old.” Write it in Korean.
Show Answer π
β μ λ μ€λ¬Όλ μ΄μ΄μμ. (jeoneun seumul-du sarieyo) β Age = Native Korean. μ€λ¬Ό (20) + λβλ (2, shortened) + μ΄ (years old). If you got this, you’re doing great!
π You Got This!
Two number systems sounds scary, but here’s the secret: you don’t need to memorize a giant rule chart. Learn a few common patterns β age, time, counting β and the rest clicks naturally with practice.
Remember that cafe from the beginning?
Now you know exactly why it’s λ and not μ΄. Go order that coffee with confidence. β
νμ΄ν (hwaiting)! πͺ
β Teacher Seoul
Explore the Korean Grammar cluster
Hub: Korean Grammar β Make Sense of It, Not Just Memorize β start here for the full guide
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