#### Answer

$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ $tens hundreds thousands
$20801\ \ \ \ 20800\ \ \ \ \ 20800\ \ \ \ \ \ \ \ 21000$

#### Work Step by Step

$208\underline0\underset\uparrow1$ $\longrightarrow$ ones digit < 5, round down
$20\underline8\underset\uparrow01$ $\longrightarrow$ tens digit < 5, round down
$2\underline0\underset\uparrow801$ $\longrightarrow$ hundreds digit $\geq$ 5, round thousands digit up