The ten-thousands place is the value that is 5 places to the left of the decimal. In this case, the "1" is in the ten-thousands place.
To round a number, we should look at the number directly before it and see if it is 5> or if it is 5≤. If the number is less than 5, it stays the same. If the number is greater than or equal to 5, then we round the number up.
In this case, we can see the number directly before the "1" is "6," so we should round up. Therefore, 16,500 rounded to the nearest ten-thousands place is 20,000.