1. Stating the problem: Add the numbers 5.75 and another number (for example, 3.25). 2. Formula used: Addition of decimal numbers is done by aligning the decimal points and adding digit by digit. 3. Intermediate work: $$5.75 + 3.25 = ?$$ 4. Add the digits starting from the right: $$5 + 5 = 10 \quad \Rightarrow \text{write } 0 \text{ and carry } 1$$ $$7 + 2 + 1 = 10 \quad \Rightarrow \text{write } 0 \text{ and carry } 1$$ $$5 + 3 + 1 = 9$$ 5. Final sum: $$5.75 + 3.25 = 9.00$$ 6. Explanation: When adding decimals, align the decimal points and add each column starting from the right. Carry over if the sum exceeds 9. The result is 9.00, which is simply 9.