(KS2, Year 4)
The LessonAn even number is a whole number that can be divided exactly by 2.
Dictionary DefinitionThe Oxford English Dictionary defines an even number as a number "divisible integrally into two equal parts; opposed to odd."
Examples of Even NumbersSome examples of even numbers are given below:
Even Numbers on a Number LineThe image below shows the even numbers on the number line.
How to Check if a Number Is an Even NumberA number is even if it can be divided exactly by 2.
QuestionIs 24 an even number?
Divide the number by 2.
24 ÷ 2 = 12
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 NumbersHere is an interactive game to help you learn about even numbers and odd numbers.
- You are the fish.
- Pop the bubbles with even numbers to collect red hearts. You need five to win.
- If a bubble with an even number reaches the top, you will lose a red heart.
- Avoid the bubbles with odd numbers. If you pop one, you will lose one of your three lives.
- Good luck!
- The fish moves to wherever you taptowards your mouse clicks. (Hint: The farther the distance, the faster it moves.)
A Formula to Generate Even NumbersThe 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
A Quick Way to See If a Number Is EvenA number is even if its last digit is 0, 2, 4, 6 or 8.
Lesson SlidesThe slider below shows a real example of even numbers. Open the slider in a new tab
- Do you disagree with something on this page?
- Did you spot a typo?