Answer=53
When looking at 52.85, knowing that we need to round to the nearest 1's place, our answer will either be 53 or 52. To find out which one it is we need to look at the digit in the tenths place.
52.85 8 is in the tenths place
The rule of rounding is, if the number is 5 or greater then you round the number up. If the number is 4 or less, then you round the number down.
8 is greater than 5, so we round up.
52.85 gets rounded to 53