I think Mike meant:
=SUMPRODUCT(--(YEAR(G1:G10)=YEAR(C1)),--(MONTH(G1:G10)=MONTH(C1)),B1:B10)

"soconfused" wrote in message
...
Mike,

I already have the date in column G which is Ja-07 and the number is
column
B which is 1. I guess don't undertand your answer. Can you explain
further??
--
DMM


"Mike H" wrote:

Maybe this:-

=SUMPRODUCT(--(YEAR(A1:A10)=YEAR(C1)),--(MONTH(A1:A10)=MONTH(C1)),B1:B10)

With a date in C1 which contains the month and year to sum.

Mike

"soconfused" wrote:

I am trying to sum a column with only certain dates, mean if the date
in
column G is Jan-07, I want to sum column B.

....A..........B................C...............D. .............E...............F.............G...... ..........H...
92203 1 400 330.9 313.0 107.9 Jan-07 376.0
92221 1 192 191.3 186.2 11.3 Jan-07 111.0

Thanks in advance for any information that could help me.