Hi, Marian,
Set a decimal tabstop at the position where you want the numbers to end. You
can do this through the Format > Tabs dialog. Another way is by clicking the
"L" symbol at the left end of the ruler until it's an inverted T with a dot
next to it, and then clicking on the ruler at the desired position.
When you enter numbers in a table cell where a decimal tabstop has been set,
you don't need to press the Tab key (or Ctrl+Tab) first, just type the
number. But be sure the text alignment of the paragraph is either Left or
Justified.
For more info, see
http://www.mvps.org/word/FAQs/TblsFldsFms/TableBasics.htm.
