## Answer :

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).

[tex]645,\underline{0}00\approx645,000[/tex]

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).

[tex]645,\underline{0}00\approx645,000[/tex]