What is the sum of the first 72 odd numbers?

Sum of the first 72 odd numbers

"The sum of the first 72 odd numbers" means that we want to add together the first 72 positive odd numbers. The list of the first 72 odd numbers starts with 1 and ends with 143. Thus, this is what we know:

Numbers = 72
First = 1
Last = 143

Below is the formula, calculation, and answer to "the sum of the first 72 odd numbers?":

(Numbers/2) x (First + Last)
(72/2) x (1 + 143)
= 5184

The method above requires us to first figure out what the last number is on the list of the first 72 odd numbers. We like the formula method above, but there is an alternate faster way to add up odd numbers. You can get the answer fast by squaring the number. Once again, the sum of the first 72 odd numbers is:

72² = 5184

Sum of Odd Numbers Calculator
Do you need the answer to a similar question? Get the answer to the sum of the first n odd numbers here!

What is the sum of the first 73 odd numbers?
Here is the next set of odd numbers that we have added together for you.