what is 658.129 in expanded form
600+ 50+ 8+ 0.1+ 0.02+ 0.009
600.000 + 50.000 + 8.000 + 0.1 + 0.02 + 0.009 (after the decimal you can add as much 0s as you want it doesn't matter) if you want to check your answer, add them all up
