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Even Numbers

(KS2, Year 4)

Let's start with a test!

The Test

Here is a -question, multi-choice test for the "Even Numbers" lesson. The pass mark is 90%. Don't worry! All the information you need to pass is in the lesson section under the test.

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The Lesson

An even number is a whole number that can be divided exactly by 2.

Dictionary Definition

The Oxford English Dictionary defines an even number as a number "divisible integrally into two equal parts; opposed to odd."

Examples of Even Numbers

Some examples of even numbers are given below:

Even Numbers on a Number Line

The image below shows the even numbers on the number line. even number line

How to Check if a Number Is an Even Number

A number is even if it can be divided exactly by 2.

Question

Is 24 an even number?

Step-by-Step:

1

Divide the number by 2.

24 ÷ 2 = 12

2

Check if the answer from Step 1 is a whole number. If it is, the original number is even. Else it is odd. In our example, 12 is a whole number.

Answer:

24 is an even number.

Interactive Game on Even Numbers

Here is an interactive game to help you learn about even and odd numbers.

You are the fish.
Pop the bubbles with even numbers to collect points.
Every correct bubble you pop earns you a green tick. If you can get five green ticks, you'll earn 1,000 bonus points! However, when a bubble with an even number reaches the top without being popped, you will lose a green tick.
Avoid the bubbles with odd numbers. If you pop one, you will lose one of your three lives and your green ticks will return to zero.
The lower you pop a correct bubble the more score you score.
Good luck!
The fish moves towards your clicks. (Hint: The farther the distance, the faster it moves.)

A Formula to Generate Even Numbers

The formula below generates even numbers:

If k takes a whole number (1, 2, 3...), then n will always be even.

k = 0 ∴ n = 2k = 2 × 0 = 0

k = 1 ∴ n = 2k = 2 × 1 = 2

k = 2 ∴ n = 2k = 2 × 2 = 4

k = 3 ∴ n = 2k = 2 × 3 = 6

k = 4 ∴ n = 2k = 2 × 4 = 8

Top Tip

A Quick Way to See If a Number Is Even

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

Lesson Slides

The slider below shows a real example of even numbers.

This page was written by Stephen Clarke.