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Gauss’ Addition Method - University of Hawaiʻi

This shortcut to getting the sum of all the numbers from one to one hundred generalizes to any sum of con-secutive whole numbers. Try adding up all the numbers between 1 and 23 by copying Gauss’ method before reading on. The natural place to start is by checking that 23 + 1 = 24, 22 + 2 = 24, and so on. Now we just need to