Well if you are rounding it to the nearest ten, then you would round it down to 10, because it is closer to 10 than to 20.
Round Round was created on 2002-08-12.
12
He won in round 12.
10
Jack Round died on 1936-12-31.
Back Round was created on -20-12-11.
Round Room was created on 2002-12-10.
It's already there.
12 knights of the round table
12 knigths of the round table
12