52.85 rounded to the nearest one

The answer for this question is 53.

When rounding, you always look at the first number in the decimal.

The rule is as follows:

If the number is 5 and above, you round up. If the number is 4 and below, you round down.

Because the number in question here is 8, you would round up because it is greater than 5.

Thus, 52.85 rounded to the nearest one is 53.