Maybe one way:

=SUMPRODUCT(--(MID(A1:A4,2,3)="000")-(MID(A1:A4,3,2)="50"),LEFT(A1:A4,4)*1)

HTH,
Paul

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"Manos" wrote in message
...
Dear all

I have to add and subtract the values of some cells.So that's the case
In the first column i have the codes of account which have in the first
part
4 numbers underscore and some other figures. (1000_A1, 1000_A2, 1050_A3,
2000_A4).

So based on the first four numbers i want to add those that have 000 and
subtract those that include 50 (eg lets say that the third character to be
5
and the fourth characted to be zero).

So i need to add 1000_a1 + 1000_a2 + 2000_a4
and sub tract the 1050_a3

I thouhg to use one sumif to add those include 000 and another one to
sumif
with 50.The problem is that i do not know how to set up the if match in
SUMIF.

Any suggestions?

Thanks in advance
Manos