$1 + 1 = 2$.

Would you like more details or have any questions? Here are some questions you might find interesting:

1. How do you add larger numbers?
2. What are some properties of addition?
3. Can you explain what addition is in mathematical terms?
4. How does addition relate to other operations like multiplication?
5. Can you give examples of addition in real life?

Tip: When adding numbers, it helps to line up the digits by their place value for clarity.