1. The problem asks to find the sum of the integers from 1 to 5. 2. We use the formula for the sum of the first $n$ natural numbers: $$S = \frac{n(n+1)}{2}$$ where $n$ is the last number in the sequence. 3. Here, $n = 5$, so substitute into the formula: $$S = \frac{5(5+1)}{2} = \frac{5 \times 6}{2}$$ 4. Simplify the expression: $$S = \frac{30}{2} = 15$$ 5. Therefore, the sum of the numbers from 1 to 5 is 15.