The sum of $1 + 1$ is:

$1 + 1 = 2$

Would you like further details or have any other questions?

Here are 5 related questions to explore:

1. What is the sum of $2 + 2$?
2. How do you perform addition with larger numbers?
3. What happens when you add negative numbers?
4. How is addition used in everyday life?
5. Can you explain the commutative property of addition?

Tip: When adding numbers, the order doesn't matter. This is known as the commutative property of addition! $a + b = b + a$.