To create a factor tree for \( 211 \), we first determine if \( 211 \) can be factored further or if it is a prime number.

### Step-by-step:

1. **Check divisibility:**
   - \( 211 \) is odd, so it's not divisible by \( 2 \).
   - Add the digits \( 2 + 1 + 1 = 4 \). Since \( 4 \) is not divisible by \( 3 \), \( 211 \) is not divisible by \( 3 \).
   - It does not end in \( 0 \) or \( 5 \), so it's not divisible by \( 5 \).
   - Checking divisibility by \( 7, 11, 13, \) and so on up to \( \sqrt{211} \approx 14.5 \) reveals no divisors.

2. **Conclusion:**
   \( 211 \) is **prime**, meaning it cannot be factored further. The factor tree for \( 211 \) is simply \( 211 \) itself.

Would you like help with another number or more explanation?

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### 5 Questions:
1. What are prime numbers, and how do you determine if a number is prime?
2. How does divisibility by small primes help in factoring?
3. Why do we stop checking divisors at the square root of a number?
4. Can all odd numbers be prime? Why or why not?
5. What is the difference between a factor tree and prime factorization?

### Tip:
To quickly determine if a number is prime, check divisibility by all primes up to its square root.

Learn how to create a factor tree for the number 211. Since 211 is a prime number, the factor tree is simply 211 itself. This solution explains divisibility rules and how to determine if a number is prime, ideal for students in Grades 6-8.

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