1.) 1
Let's start with 18 degrees and then subtract 12 degrees from it
18-12=6
Now let's take 6 degrees and subtract 5 from it
6-5=1
At 2 pm the temperature was 1 degree.
2.) $125
Start with the total amount John had ($250) and then subtract his remaining amount ($125) to find out how much he withdrew.
$250-$125=$125