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Web Results

en.wikipedia.org/wiki/Triangular_number

A triangular

betterexplained.com/articles/techniques-for-adding-the-numbers-1-to-100/

Feb 13, 2007

www.ask.com/youtube?q=Gauss Method for Adding Consecutive Numbers&v=ZplzrdKarX4

Jan 29, 2012 ... Topic: The sum 1+2+3+4+...+n What you should know: - Elementary operations.

mathcentral.uregina.ca/QQ/database/QQ.02.06/jo1.html

In elementary school in the late 1700's,

www.cut-the-knot.org/Curriculum/Algebra/GaussSummation.shtml

Proofs without words:

mathworld.wolfram.com/ArithmeticSeries.html

2, ..., in which each term is computed from the previous one by

nrich.maths.org/2478

One day

math.stackexchange.com/questions/50485/sum-of-n-consecutive-numbers

Jul 9, 2011

mathandmultimedia.com/2010/09/15/sum-first-n-positive-integers/

Sep 15, 2010

www.wikihow.com/Add-a-Sequence-of-Consecutive-Odd-Numbers

Choose an ending point. Before you get started, you need ...

More Info

nzmaths.co.nz

Let's go for

superm.math.hawaii.edu

Students will learn how to find the

mathmomblog.wordpress.com

Aug 25, 2007