the high temperature for a day in January was 7 degrees Fehrenheit. The low temperature that day was -5 degrees Fehrenheit. What is the difference in temperatures?
\
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
1 2 3 4 5 6 7 8 9 10 11 12 13
13 degrees difference
7- (-5) = 12 degrees difference
7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 12