To round 810 to the nearest 100, we look at the digit in the tens place, which is 1. Since 1 is less than 5, we keep the hundreds place (8) the same and change all digits to the right to 0. Therefore, 810 rounded to the nearest 100 is 800.
Well, let's take a moment to appreciate the number 810. When we round it to the nearest hundred, it becomes 800. Remember, rounding is like giving a number a warm hug and finding its closest friend in the hundreds place. Just a happy little adjustment to make our numbers feel cozy and comfortable.