SOLUTION: At 8:00, the temperature was 6 degrees Celsius (°C). Three hours later, the temperature was -13°C. By how many degrees Celsius did the temperature change?

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Question 1184098: At 8:00, the temperature was 6 degrees Celsius (°C). Three hours later, the temperature was -13°C. By how many degrees Celsius did the temperature change?
Answer by greenestamps(13198) About Me  (Show Source):
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abs%286-%28-13%29%29=abs%286%2B13%29=abs%2819%29=19

ANSWER: 19 degrees

Some students find this easier to understand by looking at the two numbers 6 and -13 on a number line. 6 is 6 units to the right of 0; -13 is 13 units to the left of 0; the distance between them on the number line (i.e., the difference between them) is 6+13=19.