$1 + 1 = 2$

Would you like any additional details or have any questions?

Here are 5 related questions to explore:

1. What is the sum of 2 + 2?
2. How would you solve 1.5 + 1.5?
3. What is the sum of 10 + 20?
4. How do you perform addition with larger numbers like 1234 + 5678?
5. Can you explain the properties of addition, like commutative and associative properties?

Tip: The commutative property of addition states that the order of numbers doesn't matter; $a + b = b + a$.