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The highest point in North America is Mt. McKinley, and the lowest point is Death Valley. Mount McKinley is 6184 m above de level. Death Valley is 87 m below sea level. Is 6100 m or 6300 m a better estimate of the difference between these heights? Explain

Respuesta :

It's probably 6300. Adding the two numbers together gives you 6271, which can be rounded up to 6300.
It's 6,300 because 6184 about 6200..…