Divisibility Rules for 2: Lesson for Kids

Instructor: Dina Albert
When you share food with a friend, you are splitting or dividing it between the two of you. In this lesson, you will learn how to divide by two using a quick and simple rule.

Divisibility Rule for 2

Imagine you are at the store looking at cookies. You know you want to buy a pack of 6 cookies and share them equally with your friend, but how do you know if you each of you will get an equal number of cookies? Knowing the divisibility rule for 2 will help you solve this dilemma without having to guess or whip out your calculator.

The divisibility rule for 2 is a short cut for figuring out if a number is divisible by 2 without having to actually solve the division problem. The rule says that any number that ends in a 0, 2, 4, 6, or 8 can be divided by 2 to produce a whole number. So, all even numbers (numbers that always end in 0, 2, 4, 6 or 8) are divisible by 2.

Applying the Divisibility Rule for 2

Now let's take this rule and solve your cookie dilemma. You have 6 cookies, which we know is an even number. With this simple piece of information, we can determine that 6 is divisible by 2. Your answer, then, is that you can share 6 cookies equally with a friend.

We can check our answer using math: 6/2 = 3 with nothing left over, so 6 is divisible by 2.

Let's Practice

Problem A

Which of the following numbers is divisible by 2:

25 or 26?

Well, our rule says that any number divisible by 2 will end in 0, 2, 4, 6, or 8 (in other words, any even number will be divisible by 2). Of the two choices, only the number 26 ends in an even number, so it is the only one that is divisible by 2.

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