Answer:
210
Explanation:
First off, the tenth's place is 0 in 206, so the number after that will determine the value. If the number past the tenths place is more than five, you round up, so you would raise the tenths place by 1, so you would get 210. Instead if it was the hundreds place needed rounding, it would be 200, since 206 is closer to 200 than 300. I hope this helps you.