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What Are Even Numbers? (Mathematics Lesson)

What Are Even Numbers?

Even numbers are integers that can be divided exactly by 2.

How to Check if a Number Is an Even Number

Question: Is 24 an even number?

Step 1
Divide the number by 2.
24 ÷ 2 = 12.

Step 2
If the number from Step 1 is a whole number, the original number is even. Else it is odd.
12 is a whole number. 24 is an even number.

Real Examples of Even Numbers

Some examples of even numbers are:

Quick Test
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Note

FORMAL DEFINITION OF EVEN NUMBERS

A number n is even if there exists an integer k, such that:



This ensures n can always be divided exactly by 2, without remainder.

A QUICK WAY TO CHECK IF A NUMBER IS AN EVEN NUMBER

A number is even if its last digit is 0, 2, 4, 6 or 8.