The sum of $2 + 2$ is:

$2 + 2 = 4$

Would you like more details or have any questions?

Here are 5 related questions to expand your understanding:

1. What is $3 + 5$?
2. How do you add two-digit numbers, like $23 + 47$?
3. Can you subtract $4 - 2$?
4. How do you perform multiplication, such as $2 \times 2$?
5. What is the result of $2 + 3 + 4$?

Tip: When adding, you can switch the order of numbers, and the result remains the same. This property is called "commutative property of addition."