ELI5: Explain Like I'm 5

Residual property (mathematics)

Okay kiddo, when you have a group of numbers, like 1, 2, 3, 4, 5, 6, 7, and 8, and you want to divide them into groups of two, you might end up with one left over. That leftover number is called the residual property, or sometimes called the remainder.

Let's say we divide those numbers into groups of two: 1 and 2, 3 and 4, 5 and 6, and 7 and 8. Each group has two numbers. But what about the number that's left over? Well, that's the residual property.

It's like if you have a bunch of cookies and you want to share them with your friends. If you have 12 cookies and you want to share them equally among 3 friends, each friend would get 4 cookies. But you would still have 3 cookies leftover. Those 3 cookies are the residual property, or the remainder.

So in math, when you divide numbers and there's a leftover amount, that leftover amount is called the residual property. It's important to know because it can change the answer you get when you're doing math problems.