To round 10164 to the nearest 1000, we look at the hundreds place, which is 1 in this case. Since the digit in the hundreds place is less than 5, we keep the thousands place (10) the same and change all digits to the right to zero. Therefore, 10164 rounded to the nearest 1000 is 10000.
Well, isn't that a happy little number! When we round 10164 to the nearest thousand, we look at the hundreds place. Since the hundreds place is 1, which is less than 500, we round down to 10000. Just like that, we've created a beautiful rounded number to work with.
Oh, dude, rounding numbers is like the easiest thing ever. So, 10164 rounded to the nearest 1000 would be 10000. It's like you're just moving that little number around, no big deal.