round to the nearest hundered and add the rounded numbers:385,4012,856

385 is between 300 and 400.

Which is it closer to? (400)

4012 is between 4000 and 4100
Which is it closer to?

856 is between 800 and 900
Is it closer to 800 or 900?

If you were given a number like 850, which is exactly between 800 and 900, you would round up to 900. That's just the rule.

The sum of the rounder numbers is 400 + 4000 + 900 = ?