The record high January temperature in Austin, Texas, is 90°F. The record low January temperature is -2°F. What is the difference between the high and low temperatures?

92.

Since it is asking for the difference, that means you have to subtract the two.

Since the highest temperature is 90°F and the lowest is -2°F, you have to subtract the two.

So, it will have to be ##90°F - (-2°F)## ##= 90°F+2°F = 92°F##

(Make sure you remember that subtracting a negative number equals a positive number).