5th grade word problem math

the teacher asked the students to add up all the numbers from 1 to 100.It only took carl a minute to come up with the answer. Can you figure what carl did to come up with the answer and what is the correct answer.Hint: there is a pattern.

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asked by tryston
  1. http://www.ehow.com/how_2225976_add-numbers.html

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    posted by Ms. Sue
  2. 100(100+1)/2= 5050

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    posted by prakash

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