The sum of $2 + 2$ is:

$2 + 2 = 4$

Would you like more details or have any questions?

Here are five related questions:

1. What is $2 + 3$?
2. How would you subtract $2 - 1$?
3. Can you multiply $2 \times 2$?
4. What is the square of 2?
5. What is $2 + 2 + 2$?

Tip: Addition is a fundamental arithmetic operation that combines two or more numbers to give a total sum.