Steply

Is 13 odd or even

Step by step, with the reason for every step · Odd and even · Elementary

Step by step

The question

Question: is 13 odd or even?

Is 13 odd or even?

Even means it makes pairs, with none left over.

Odd means one is left over.

even: all in pairs
odd: 1 left over

1 Make pairs

Here are 13 dots in pairs.

A pair is 2.

Ring each pair.

One dot has no partner.

2 Odd or even

One is left over.

So 13 is odd.

= 13 is odd

3 Check

We count by 2s: 2, 4, 6, 8, 10, 12, 14.

We jump over 13.

13 is not on the list.

Yes!

It works.

2, 4, 6, 8, 10, 12, 14

Let's look back.

First: make pairs.

Then: odd or even.

Last: check.

Answer
= 13 is odd

Your turn

Try this one yourself, then check:

Is 9 odd or even?
Show the answer
odd

More from Odd and even

The whole lesson: Odd and even →