Excel 2007 : subtraction of multiple rows by 10 in a column

im trying to come up w/ a formula to do exactly what my thread title states.

i need to create a formula to subtract 10 from each number to display in column b.

here is an example.

23 needs to be 13, 45 needs to be 35, etc, etc. but i need the new data to be aligned in column b.

column a column b
23
45
53
76
83
90
56
26
74
18

hope this is detailed enough as i know the rules state it has to be.

If you have your original numbers in A2 down

Then in B2 place this formula and drag/copy down

=A2-10