The highest point in the world is Mt. Everest at 8,850m above sea level. The lowest point in the world is the Bentley Trench in Antarctica at 2,555m below. What is the difference between the highest and lowest elevation points?
8,850 - (-2,555) = ? [It is negative 2,555 because it is BELOW sea level] 8,850 + 2,555 = ? [The sign changed because a double negative is a positive] = 11,405 m of a difference
