Here, we will not only tell you what the sum of integers from 1 to 1020 is, but also show you how to calculate it fast. The sum of the integers from 1 to 1020 is 520,710.
To get the answer above, you could add up all the digits like 1+2+3... +1020, but there is a much easier way to do it! Use the following formula:
n(n + 1)/2 = Sum of Integers
In this case, n=1020, thus you get your answer by entering 1020 in the formula like this:
1020(1020 + 1)/2 = 520,710
Sum of Integers Calculator
To get the sum of integers from 1 up to another number, please enter that other number here: