The sum of 4 and 4 is 8.

Would you like any details or have any questions? Here are some questions you might want to ask:

1. How do you add fractions?
2. What is the derivative of a polynomial?
3. How do you solve a quadratic equation?
4. Can you explain the Pythagorean theorem?
5. What are the basic rules of exponents?

Tip: When adding two numbers, align them by their place value to ensure accuracy in your calculations.