How do you round 9090 to the nearest 10?

Oh, dude, rounding numbers is like basic math, right? So, to round 9090 to the nearest 10, you just look at the digit in the tens place, which is 0, and since it's less than 5, you keep the hundreds and thousands digits the same and change the tens digit to 0. So, 9090 rounded to the nearest 10 is 9090. Easy peasy lemon squeezy!