Alright little one, imagine you have a lot of numbers. Numbers are like counting blocks that help us keep track of things. Now, out of all these numbers, we want to find the biggest one. That's what we call the largest number.
Think of all the numbers like kids in a classroom. There can be a lot of kids, but which kid is the tallest? That kid would be the largest number out of all the numbers in the classroom.
But how do we know which number is the biggest? We can compare the numbers like we compare the heights of the kids. We can say "this number is bigger than that one, but that one is bigger than this other one."
Therefore, we can use this method to compare and find the largest number out of all of them, just like how we can identify the tallest kid in the classroom. And, the number which is biggest among all is known as the largest number.