Short and sweet . . . can this be done?

A column has (ex) 300 rows of numbers and I want to sort them.

How can I get around Excel's formatting?

Instead of getting . . .

1
10
11
. . . . .
19
2
20
21
. . . .
3
30
31
etc . . .

I want
1
2
3
4
5
6
7
8
9
10
11
etc