The answer to $2 + 2$ is $4$.

Would you like further clarification or have any other questions?

Here are 5 related mathematical questions:

1. What is $2 + 2 \times 2$ following the order of operations?
2. How can you represent $2 + 2$ visually using a number line?
3. What happens if you add two fractions like $\frac{2}{3} + \frac{2}{3}$?
4. How does addition work in modular arithmetic (e.g., $2 + 2 \mod 3$)?
5. Can you explain the difference between addition and multiplication of numbers?

Tip: Always follow the order of operations (PEMDAS) when solving complex expressions!