Answer :

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


If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down (no change).

[tex]0.52\approx0.5\\\\28.17\approx28\\\\12.7255\approx12.726\\\\7.0515\approx7.05\\\\54.9806\approx54.98[/tex]