One variation is to add an empty sheet before the first sheet to be summed (Sheet1), and another empty sheet after the last sheet to be summed (Sheet160). If you named these Start and Finish, respectively, then the formula on your summary sheet to add all the C3 cells would be: =SUM(Start:Finish!C3) If you add another sheet, such as Sheet161, it will automatically be included in the SUM formula as long as it is between the Start and Finish sheets. Hope this helps, Hutch --- On Thu, 2/26/09, Rich <rraszk@xxxxxxx> wrote: From: Rich <rraszk@xxxxxxx> Subject: [mso] Three dimensional formula To: mso@xxxxxxxxxxxxx Date: Thursday, February 26, 2009, 8:39 AM Larry, This is called a "three dimensional" range, and to set it (if my old memory chips aren't failing me): 1. Go to the "summary Sheet and click on the cell to put in the formula and start your formula =Sum( 2. Click on Sheet 1 tab and select the cell (A2); 3. At the bottom, scroll to the last sheet (Sheet 160), hold down "Shift" + click on it's tab - this selects all the sheet tabs in between, then click on A2 and "enter key. You should have "=Sum(Sheet1!A2:Sheet160!A2). Rich ----- Original Message ----- From: mso@xxxxxxxxxxxxx To: mso digest users Sent: Thursday, February 26, 2009 12:00 AM Subject: mso Digest V8 #35 MSO Digest To view individual posts in the archives, go here: //www.freelists.org/archives/mso------------------------------------ mso Digest Wed, 25 Feb 2009 Volume: 08 Issue: 035 In This Issue: [mso] Excel 97-2000 sheet references. ---------------------------------------------------------------------- From: LarrysPCRemedies@xxxxxxx Date: Wed, 25 Feb 2009 22:15:20 EST Subject: [mso] Excel 97-2000 sheet references. Hi guys, I am developing a spreadsheet with many individual sheets using the Excel 97-2000 format. All but one of them contain individual data items in the same format. The lonely one is a summary sheet of the other sheets ... mostly sums but may contain other functions, which will reference the others. Rather than saying ='Sheet 1'!A2+'Sheet 2'!A2+'Sheet 3'!A2+'Sheet 4'!A2+ ... 'Sheet 160'!A2 in the summary sheet which is rather tedeous, is there a way of specifying a RANGE of sheets so that I could use something like =SUM('Sheet 1'!A2..'Sheet 160'!A2) Help me Obi-Wan Kenobi, your my only hope Larry **************You're invited to Hollywood's biggest party: Get Oscars updates, red carpet pics and more at Moviefone. (http://movies.aol.com/oscars-academy-awards?ncid=emlcntusmovi00000001) ------------------------------ End of mso Digest V8 #35 ************************ E-mail message checked by Spyware Doctor (6.0.0.386) Database version: 5.11850 http://www.pctools.com/en/spyware-doctor-antivirus/ E-mail message checked by Spyware Doctor (6.0.0.386) Database version: 5.11850 http://www.pctools.com/en/spyware-doctor-antivirus/ ************************************************************* You are receiving this mail because you subscribed to mso@xxxxxxxxxxxxx or MicrosoftOffice@xxxxxxxxxxxxxxxx To send mail to the group, simply address it to mso@xxxxxxxxxxxxx To Unsubscribe from this group, visit the group's homepage and use the dropdown menu at the top. This will allow you to unsubscribe your email address or change your email settings to digest or vacation (no mail). //www.freelists.org/webpage/mso To be able to share files with the group, you must join our Yahoo sister group. This group will not allow for posting of emails, but will allow you to join and share problem files, templates, etc.: http://tech.groups.yahoo.com/group/MicrosoftOffice . This group is for FILE SHARING ONLY. If you are using Outlook and you see a lot of unnecessary code in your email messages, read these instructions that explain why and how to fix it: http://personal-computer-tutor.com/abc3/v28/greg28.htm ************************************************************* ************************************************************* You are receiving this mail because you subscribed to mso@xxxxxxxxxxxxx or MicrosoftOffice@xxxxxxxxxxxxxxxx To send mail to the group, simply address it to mso@xxxxxxxxxxxxx To Unsubscribe from this group, visit the group's homepage and use the dropdown menu at the top. This will allow you to unsubscribe your email address or change your email settings to digest or vacation (no mail). //www.freelists.org/webpage/mso To be able to share files with the group, you must join our Yahoo sister group. This group will not allow for posting of emails, but will allow you to join and share problem files, templates, etc.: http://tech.groups.yahoo.com/group/MicrosoftOffice . This group is for FILE SHARING ONLY. If you are using Outlook and you see a lot of unnecessary code in your email messages, read these instructions that explain why and how to fix it: http://personal-computer-tutor.com/abc3/v28/greg28.htm *************************************************************