ELI5: Explain Like I'm 5

Mental Calculation World Cup

Hi kiddo! Have you ever played a game where you have to do a lot of math problems really fast, and the person who answers the most correctly wins? Well, there is a competition called the Mental Calculation World Cup where grown-ups from all over the world come together to do just that!

In this competition, the contestants have to do a lot of math problems in their heads without using a calculator, pen or paper. They have to add, subtract, multiply and divide really fast, and the person who answers the most questions in the shortest amount of time wins.

They are given different types of questions, like adding up really big numbers or multiplying two big numbers together. The contestants have to use their brains and try to figure out the answer as quickly as they can. They are not allowed to use a calculator, because then it wouldn't be a fair competition!

The Mental Calculation World Cup is a really cool way to show that our brains are super powerful and can do amazing things. It's also a fun way for people from all over the world to come together and compete, just like in the Olympics. Maybe one day, if you practice your math a lot, you could be in the Mental Calculation World Cup too!