# Odd Numbers and Even Numbers

Welcome to Odd Numbers and Even Numbers page.

Find out about even and odd numbers and how to spot them.

Take a look at some of our fun practice worksheets or have a go at our odd or even number quiz.

By the time you've finished, you'll be an expert at odd and even numbers.

## Odd Number and Even Numbers Support Page

### Odd Numbers Support

What is an Odd number?

When you pair all the members of an odd number up, there is always one left out.

The two diagrams below show two different odd numbers which have been grouped in 2s.

In each odd number, there is a member which has been left out of a group of 2.

If a whole number is not odd, then it is even.

How to quickly tell if a number is Odd

• Any whole number which is not a multiple of 2 is odd.
• This means that if you divide ANY odd number by 2, you get a remainder or decimal answer.
• Example: 15 ÷ 2 = 7.5
• If the Ones digit is 1, 3, 5, 7, or 9, then the number is odd.

Odd Numbers Examples

• 73, 21, 65, 117, 81 are all odd.
• 32, 78, 14, 56, 110 and 86 are not odd (they are even).

### Even Numbers Support

What is an Even number?

When you pair all the members of an even number up, no-one is left out.

The two diagrams below show two different even numbers which have been grouped in 2s.

No member has been left out of a group of 2.

If a whole number is not even, then it is odd.

How to quickly tell if a number is Even

• Any number in the 2 times table (or a multiple of 2) is even.
• This means that if you divide ANY even number by 2, then you get a whole number
• Example: 78 ÷ 2 = 39.
• If the Ones digit is 0, 2, 4, 6, or 8 then the number is even.

Even Numbers Examples

• 18, 32, 74, 120, 96 are all even.
• 23, 75, 19, 35, 117 and 91 are not even (they are odd).

### More Recommended Math Worksheets

Take a look at some more of our worksheets similar to these.

### Odd and Even Numbers Online Quiz

Our quizzes have been created using Google Forms.

At the end of the quiz, you will get the chance to see your results by clicking 'See Score'.

This will take you to a new webpage where your results will be shown. You can print a copy of your results from this page, either as a pdf or as a paper copy.

For incorrect responses, we have added some helpful learning points to explain which answer was correct and why.

We do not collect any personal data from our quizzes, except in the 'First Name' and 'Group/Class' fields which are both optional and only used for teachers to identify students within their educational setting.

We also collect the results from the quizzes which we use to help us to develop our resources and give us insight into future resources to create.

This quick quiz tests your knowledge of odd and even numbers up to 20.

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