How to add a fixed amount to all cells in a column

Hi All,

I am trying to figure out how to add a fixed amount in percent (ie. 10%) to all cells in a column.
Here is an example:

Price:
1.00
2.00
2.50
3.00
3.00
5.00

I want to add 10% to everything in the above column to give:

Price:
1.10
2.20
2.75
3.30
3.30
5.50

The column has thousands of items so manual editing is not something I can complete this year ;-)

If this involves some kind of formula would this prevent me from exporting as a CSV file - or would the CSV simply contain the numbers rather than the underlying formula?

Apologies if this is a simple question but I am stumped :-?

Any help appreciated!

Thanks,

S