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Lesson 5: Even and odd numbers

# Understanding even and odd numbers visually

Learn about the difference between even and odd numbers and how to identify them. Use groups of objects to make pairs to identify even numbers and objects that don't have a pair are odd numbers. Created by Sal Khan.

## Want to join the conversation?

• Is 7 odd or even?
• You can tell if a number is odd or even by looking at the last digit.
In other words, what the number ends in.
If the number ends in 2, 4, 6, 8, or 0, then the number is even.
If the number ends in 1, 3, 5, 7, or 9, then the number is odd.

Let's look at a few examples.

Is 10 even or odd?
Well, 10 ends with a 0.
That means that 10 is even.

Is 3 even or odd?
3 ends with a 3.
3 is odd.

Even if you don't know how to read that, you can still work out if it's even or odd.
You just have to look at what the number ends in.
23523 ends with a 3.
So twenty-three thousand, five hundred and twenty-three (23523) is odd.

Let's get back to your 7.
Is 7 even or odd?
7 ends with a 7.
So... 7 is odd!

I hope this helped!
Zo Ee :)
• Can decimals be even or odd like half of 5 is 2.5 is that an even number?
• Decimals are neither even nor odd. Even or odd numbers must be integers which means no decimal places. Secondly, an even number must be exactly divisible by 2. Since 2.5 is not exactly divisible by 2 and is not an integer it is not an even number.
• why is 15 odd I thout it was even
• A lot of people think that numbers that end with a 5 are even, but they're not. For a number to be even, it has to end with a 2, 4, 6, 8, or 0.
• is 20 an even or odd?
• 20 is even.
• what is odd and even mean
• An even number is a number that can be divided into two equal groups. An odd number is a number that cannot be divided into two equal groups. Hope it helps