# A mountain climber climbed down a cliff 50 feet at a time. He did this 5 times in one day. What was the overall change in his elevation?

$- \text{250 ft}$
Every time he climbs down, he experiences a change in elevation of $- 50$ feet as he is climbing DOWN.
So he does this five times. The total change in elevation = 5 xx (-"50 ft") = -"250 ft"