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Is 9 odd or even

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

Step by step

The question

Question: is 9 odd or even?

Is 9 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 9 dots in pairs.

A pair is 2.

Ring each pair.

One dot has no partner.

2 Odd or even

One is left over.

So 9 is odd.

= 9 is odd

3 Check

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

We jump over 9.

9 is not on the list.

Yes!

It works.

2, 4, 6, 8, 10

Let's look back.

First: make pairs.

Then: odd or even.

Last: check.

Answer
= 9 is odd

Your turn

Try this one yourself, then check:

Is 7 odd or even?
Show the answer
odd

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