Answer
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ $tens hundreds thousands
$432198\ \ \ \ \ \ 432200\ \ \ \ 432200\ \ \ \ \ 432000$
Work Step by Step
$4321\underline9\underset\uparrow8$ $\longrightarrow$ ones digit $\geq$ 5, round tens digit up
$432\underline1\underset\uparrow98$ $\longrightarrow$ tens digit $\geq$ 5, round hundreds digit up
$43\underline2\underset\uparrow198$ $\longrightarrow$ hundreds digit < 5, round down