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Divisibility Rules for 5: Lesson for Kids

Instructor: Dina Albert
You use division more often than you realize. For example, when you share food with friends, split money with someone, or even slice a pizza, you're using division. In this lesson, you'll learn to recognize if a number is divisible by 5 simply by looking at it.

What is Divisibility?

When a number is divisible it means that we can split it into equal groups without any remainder, or leftovers. For instance, if you and a friend want to share 4 cookies equally, each of you would get 2 cookies: 4 cookies / 2 people = 2 cookies per person. As there are no remainders, or leftovers, this means that 4 is divisible by 2.

Now imagine that 2 more friends came to join you, and the 4 of you want to share the 4 cookies. Well, 4 cookies / 4 people = 1 cookie per person. Again, as there's no remainder, we could also say that 4 is divisible by 4.

What is the Divisibility Rule of 5?

But how do we figure out other problems, such as whether or not 50 is divisible by 5? Drawing 50 cookies would take quite a long time. To make solving quicker and easier, we can apply the divisibility rule of 5, which states that if a number ends in 0 or 5, we can divide it by 5. In other words, we can make equal groups without a remainder.

Take look at these images, which test the divisibility rule of 5 for the number 5 and the number 10.

by5A

by5B

Practice Problems

Imagine that 5 people want to share 50 chocolate bars. Before buying the chocolate bars, they want to make sure they can split them equally and have nothing left over.

To solve this problem, we will need to divide 50 by 5. Here, we can ask ourselves: How many times can we count by 5 until we get to 50? Let's see: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, or ten times. So, 50 / 5 = 10, with no remainder. The divisibility rule for 5 is true for the number 50, which ends in 0.

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