Probably you have your 'Calculation' set to manual.

<Tools <Options <Calculation tab,

And click on "Automatic".
--
HTH,

RD
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Please keep all correspondence within the Group, so all may benefit!
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"GWYBUSA" wrote in message
...
Ctrl+D is copying the formula down but then it is not computing according
to
the formula. It only copies the answer from the cell I am doing the
Ctrl+D
from. For example, the formual in the cell is =L2-H2 (the correct answer
in
this instance is 20.00). The very next cell reads =L3-H3 but it shows
20.00
rather than whatever answer it would be if it computed L3-H3.