it was a 8 degrees at nightfall. The temperature dropped 10 degrees by midnight. What was the temperature at midnight?

-2 is the answear

Right.

To find the temperature at midnight, you need to subtract 10 degrees from the temperature at nightfall.

Nightfall temperature = 8 degrees
Temperature drop = 10 degrees

Therefore, the temperature at midnight can be calculated as:

Temperature at midnight = Nightfall temperature - Temperature drop

Temperature at midnight = 8 degrees - 10 degrees

Temperature at midnight = -2 degrees

So, the temperature at midnight was -2 degrees.