The sum of $2 + 2$ is $4$.

Would you like more details or have any questions?

Here are 5 questions that expand on this basic arithmetic:

1. What is $5 + 3$?
2. How do you subtract $7 - 4$?
3. Can you calculate $10 \times 2$?
4. What is $12 \div 4$?
5. How would you solve $2x + 2 = 8$?

Tip: Practice with basic arithmetic operations strengthens mental math skills.