The sum of $2 + 2$ is $4$.

Would you like more details or have any other questions?

Here are 5 related questions:

1. What is $3 + 3$?
2. How would you solve $5 + 7$?
3. What is the sum of $10 + 15$?
4. Can you calculate $6 - 2$?
5. How do you add two negative numbers, like $-3 + -5$?

Tip: Adding two numbers is the same as finding their total by combining their values.