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

Would you like any more examples or explanations?

Here are five related questions:

1. What is $5 + 3$?
2. How do you solve simple addition with larger numbers?
3. Can addition be performed with negative numbers?
4. What is the property of addition known as the commutative property?
5. How does addition work with fractions?

Tip: When adding large numbers, break them down into smaller parts to simplify the process!