Korean language learning worksheet focusing on Sino-Korean and Native Korean numbers, with exercises to write numbers in figures and convert between numeric and Korean forms.

Problem Overview:

The task involves converting numbers between Sino-Korean and Native Korean numeral systems. Here's a breakdown of the tasks:

1. Sino-Korean numbers - Write the numbers in figures
Convert Sino-Korean numerals (e.g., 십팔, 구) to their corresponding Arabic numerals.

2. Sino-Korean numbers - Write the numbers in sino-Korean numbers
Convert Arabic numerals (e.g., 3, 16) to their corresponding Sino-Korean numerals.

3. Native Korean numbers - Write the numbers in figures
Convert Native Korean numerals (e.g., 열곱, 여든 일곱) to their corresponding Arabic numerals.

4. Native Korean numbers - Write the numbers in native Korean numbers
Convert Arabic numerals (e.g., 6, 517) to their corresponding Native Korean numerals.

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Solution:

#### 1. Sino-Korean numbers - Write the numbers in figures

| Sino-Korean Numeral | Arabic Numeral |
|---------------------|----------------|
| 1) 십팔 | 18 |
| 2) 구 | 9 |
| 3) 사십일 | 41 |
| 4) 팔십일 | 81 |
| 5) 천사백오십구 | 1,459 |
| 6) 십칠 | 17 |
| 7) 육십삼 | 63 |
| 8) 칠십오 | 75 |
| 9) 오십육 | 56 |
| 10) 백이 | 102 |
| 11) 이십사 | 24 |
| 12) 구십이 | 92 |
| 13) 이백삼십 | 230 |
| 14) 육백칠 | 607 |
| 15) 만팔천칠백사십육 | 18,746 |

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#### 2. Sino-Korean numbers - Write the numbers in sino-Korean numbers

| Arabic Numeral | Sino-Korean Numeral |
|----------------|---------------------|
| 1) 3 | 삼 |
| 2) 16 | 십육 |
| 3) 45 | 사십오 |
| 4) 92 | 구십이 |
| 5) 11 | 십일 |
| 6) 18 | 십팔 |
| 7) 20 | 이십 |
| 8) 52 | 오십이 |
| 9) 30 | 삼십 |
| 10) 63 | 육십삼 |
| 11) 32 | 삼십이 |
| 12) 87 | 팔십칠 |
| 13) 19 | 십구 |
| 14) 24 | 이십사 |
| 15) 75 | 칠십오 |

---

#### 3. Native Korean numbers - Write the numbers in figures

| Native Korean Numeral | Arabic Numeral |
|-----------------------|----------------|
| 1) 열곱 | 7 |
| 2) 열여덟 | 18 |
| 3) 스물다섯 | 25 |
| 4) 열일곱 | 17 |
| 5) 여든일곱 | 87 |
| 6) 스물셋 | 23 |
| 7) 서른셋 | 33 |
| 8) 열하나 | 11 |
| 9) 예순넷 | 64 |
| 10) 마흔아홉 | 49 |
| 11) 아흔 | 90 |
| 12) 일흔둘 | 72 |
| 13) 마흔여덟 | 48 |
| 14) 쉰여덟 | 58 |
| 15) 스물둘 | 22 |

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#### 4. Native Korean numbers - Write the numbers in native Korean numbers

| Arabic Numeral | Native Korean Numeral |
|----------------|-----------------------|
| 1) 6 | 여섯 |
| 2) 11 | 열한 |
| 3) 37 | 서른칠 |
| 4) 42 | 마흔둘 |
| 5) 517 | 다름백일칠 |
| 6) 15 | 열пять |
| 7) 153 | 백오십삼 |
| 8) 61 | 예순일 |
| 9) 74 | 칠십네 |
| 10) 3021 | 삼천이십일 |
| 11) 29 | 스물아홉 |
| 12) 18 | 열여덟 |
| 13) 372 | 삼백칠십이 |
| 14) 99 | 구십구 |
| 15) 53,276 | 오만삼천이백칠십육 |

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Explanation:

1. Sino-Korean Numerals:
- These are based on Chinese numerals and are used for exact quantities (e.g., dates, addresses, phone numbers).
- Examples:
- 십팔 = 18
- 구 = 9
- 천사백오십구 = 1,459

2. Native Korean Numerals:
- These are purely Korean and are used for approximate quantities or in everyday speech.
- Examples:
- 열곱 = 7
- 스물다섯 = 25
- 다름백일칠 = 517

3. Conversion Process:
- For Sino-Korean numerals, each component is translated directly (e.g., 십 = 10, 팔 = 8 → 18).
- For Native Korean numerals, the structure follows a different pattern (e.g., 열 + 일 + 칠 = 17).

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Final Answer:

\boxed{
\begin{array}{ll}
\text{1. Sino-Korean to Figures:} & \text{See above table.} \\
\text{2. Figures to Sino-Korean:} & \text{See above table.} \\
\text{3. Native Korean to Figures:} & \text{See above table.} \\
\text{4. Figures to Native Korean:} & \text{See above table.} \\
\end{array}
}