Korean Number Systems

I realized my writing of posts might be slightly sporadic depending on my productivity level that week. But since I got a lot of sleep last night I'll write another one this weekend. This song has been stuck in my head since I've heard it so Click Here to suffer with me! It has a really cool concept for this music video!
Anyway, lets move on to the two Korean number systems. There is the native system and the Sino Korean system. They are used for different things.

Native System:
1. Age
2. The number of people
3. Hour of the day
4. Number of hours/things

Sino System:
1. Age
2. Date
3. Temperature
4. Measurements
5. Minutes/seconds
6. Phone numbers
7. Money

Here's one through to ten in the Native System:
하나...hana 1
둘...dool 2
셋...seht 3 (when the ㅅ is on the bottom alone it makes a "t" sound)
넷...neht or net 4
다섯...da-suht 5
여섯...yuh-suht 6
일굽...eel-gob 7
여덟...yuh-duhlb 8
아홉... ah-hop 9
열...yuhl 10

When you want to say 11, you add ten and one, to make "열하나" or "eleven." This pattern continues throughout the system.

스물...seu-mool 20
서른...suh-reun 30
마흔...mah-heun 40
쉰...shwin 50
예순...yeh-soon 60
일흔...eel-heun 70
여든...yuh-deun 80
아흔...ah-heun 90

If you wanted to say twenty two for example, it would be "스물둘"

Sino System:
일...eel 1
이...ee 2
삼...sahm 3
사...sah 4
오...oh 5
육...yook 6
칠...cheel 7
팔...pahl 8
구...goo 9
십...ship 10

When you want to say eleven you would do "십일" just like the native system. But when you get into bigger numbers it changes.

이십...ee-ship 20
삼십...sahm-ship 30
사십...sah-ship 40
오십...oh-ship 50
육십...yook-ship 60
칠십...cheel-ship 70
팔십...pahl-ship 80
구십...goo-ship 90

As you can see the smaller number is now in the front, compared to being the second figure as shown above. For example 21 is written as "이십일" or two, ten, and one. So to clarify, the smaller number in front of the ten shows if its twenty and the last shows how many of the twenty.

백...baek 100
이백...ee-baek 200
천...chuhn 1000
이천...ee-chuhn 2000

These are some other numbers that are helpful. This is meant as an introduction to the number system and definitely isn't as in depth as one could go. Anyway, here you go! Happy Studying!