The result of $100 + 100$ is $200$.

Would you like further details or have any questions? Here are some related questions:

1. What is $200 \times 2$?
2. How do you add two large numbers efficiently?
3. What are the properties of addition in mathematics?
4. How can you add fractions like $\frac{1}{2} + \frac{1}{4}$?
5. What are the real-life applications of addition?

Tip: When adding numbers, you can break them down into smaller components to make the calculation easier, such as $100 + 100 = (50 + 50) + (50 + 50)$.