"jhorsley" wrote...
I'm trying to do a sumif. For the criteria I want to sum anything that
begins with a value in cell A7. So my formula looks like
=sumif('Worksheet2,!$I$3:$I$586,A7*,'Worksheet2,! J7:J590)
the value in cell A7 is 4040 SL

I've tried all sorts of variations for the A7* but it returns 0. If I
type in "4040 SL*" for the criteria it comes up with a pretty close
number but not the exact number.

Did you try

=SUMIF('Worksheet2,!$I$3:$I$586,A7&"*",'Worksheet2 ,!J7:J590)