Getting a 0 value when formula multiplies 2 cells but 1 is empty

[YvesT]

Hello everybody, just signed up since i cant get it figured out myself.
Question itself will show i am not really great with excel.



I am using this in C10 to C18
=ABS(A10-B10)
To get the difference between A10:A18 and B10:B18.
However A16 is 58009 and B16 is blank but C16 is still showing 58009 while it has to be 0.
Makes sense with the formula used.

What is a better formula i can use to calculate this?

Thanks

[sktneer]

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[dan4ish]

Blank Cell is consider as 0
58009-0 = 58009
ABS(58009)= 58009

[dan4ish]

Blank Cell is consider as 0
58009-0 = 58009
ABS(58009)= 58009

[YvesT]

Sorry totaly missed the reply.
Problem with this is.
for example A10 is old value B10 is new value
which will in turn give the new value to A11.

This solution this will be a new problem i think.

[oeldere]

c10=(or(a10="",b10=""),0,abs(a10-b10)) and drag down.