Final answer:
The student started with an initial temperature of 25 celsius, added 3 degrees, subtracted 8 degrees, and then subtracted another 12 degrees to end with a temperature of 8 celsius. Therefore, the ending temperature was 8 celsius.
Step-by-step explanation:
The student's question involves a simple calculation of temperature changes using addition and subtraction. To solve this problem, we start with the initial temperature and then apply each change sequentially. At noon, the temperature was 25 celsius. It rose 3 degrees, making the temperature 25 + 3 = 28 celsius. Then, the temperature fell 8 degrees, which is 28 - 8 = 20 celsius. Finally, it dropped another 12 degrees, resulting in 20 - 12 = 8 celsius. Therefore, the ending temperature was 8 celsius. Therefore, the ending temperature was 8 degrees Celsius. This sequence of changes demonstrates the importance of considering both increases and decreases in temperature when calculating the final result. It's not just about summing or subtracting each change; the order of operations matters.