SOLUTION: How would you solve this? I'm in ninth grade in Geometry 1 Honors: "Find the sum of the first 80 odd integers. Make your own term and value chart. Label the top row, 'number of odd

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Let S_n be the sum of the first n odd (positive) integers (e.g. S_n = 1+3+...+(2n-1))

n---S_n
1 1
2 4
3 9
4 16
k k^2
80 80^2 = 6400

It can be proved using induction that the sum of the first k odd integers is k^2.