How many even numbers between 1 and 1000? How many even numbers between 1 and 1000? You could just make a list of all the even numbers between 1 and 1000 and then count them, but what fun would that be?

Instead, we have created this simple process with a small formula to calculate exactly how many even numbers there are between 1 and 1000.

We start by determining the first even number and last even number between 1 and 1000. The numbers between 1 and 1000 start with 2 and end with 999. That means that the first even number is 2 and the last even number is 998.

Now you add 2 to the difference of the last even number and the first even number, and then divide the sum by 2. Here is the formula and the answer to "How many even numbers between 1 and 1000?"

N = (Last - First + 2) ÷ 2
N = (998 - 2 + 2) ÷ 2
N = 998 ÷ 2
N = 499
Even numbers between 1 and 1000 = 499

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