1. Let's solve a simple addition problem: What is 2 plus 3? 2. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers we add, and $c$ is the answer. 3. Here, $a = 2$ and $b = 3$, so we write: $$2 + 3 = ?$$ 4. Now, count 2 objects, then count 3 more objects, and put them together. 5. When we count all objects together, we get 5. 6. So, $2 + 3 = 5$. This means if you have 2 apples and get 3 more, you have 5 apples in total!