$1 + 1 = 2$

Would you like further details or have any other questions?

Here are 5 related questions to expand on this:

1. What is the sum of $2 + 3$?
2. How do you perform addition with larger numbers, like $123 + 456$?
3. What is $1.5 + 2.3$ when dealing with decimals?
4. How does addition work with negative numbers, for example $-1 + 3$?
5. Can you explain how addition is used in solving equations?

Tip: Addition is one of the basic operations in mathematics and forms the foundation for more complex concepts like algebra and calculus!