The answer to $4 + 4$ is:

$4 + 4 = 8$

Would you like to see related details or ask any further questions?

Here are five related questions:

1. What is $4 \times 4$?
2. How would you solve $4 + 4 \div 2$?
3. What is $4^2$?
4. How do you express $4 + 4$ using multiplication?
5. What is the sum of $4 + 4 + 4$?

Tip: In math, always follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) to avoid mistakes in more complex problems.