$1 + 1 = 2$.

Would you like more details on this, or do you have any further questions?

Here are five related questions for you to explore:

1. What is $2 + 2$?
2. What is $1 + 2$?
3. What is $1 - 1$?
4. What is $2 \times 1$?
5. What is $1 \div 1$?

Tip: When adding two numbers, the order does not matter—this is called the commutative property of addition.