Last year the highest temperature in a city was recorded as 23ºC, and the lowest temperature was recorded as - 10ºC. How many degrees warmer was the highest temperature than the lowest temperature?

33 degrees C

Step-by-step explanation:

On the integer scale, the numeric values can be added thus

23 to - 10

23 to 0 and 0 to - 10

23-0 = 23

0 - (-10) = 10

23 + 10 = 33

Thus, 33 degree C is the difference between the two temperatures.