Ah! This is so hard!

From midnight to 6:00 am the temperature rose 8 degrees C. At 6:00 am the temperature was -20 degrees C. What was the temperature at midnight?
It's supposed to involve integers...

This chart may help you.

http://www.mathnstuff.com/gif/bigneg.gif

To find the temperature at midnight, you need to subtract the rise in temperature (8 degrees) from the temperature at 6:00 am (-20 degrees). By subtracting 8 from -20, you can find the temperature at midnight.

To do this calculation with integers, you can use the concept of addition and subtraction on the number line.

Start at -20 and move 8 units to the right (or add 8).

-20 + 8 = -12

So, the temperature at midnight was -12 degrees Celsius.

-28