<div>
Maybe this will help<br />
<br />
=SUM(INDIRECT(ADDRESS(11+M<wbr />ATCH(B7,A1<wbr />2:A63,0),3<wbr />)&amp;&quot;:&quot;&amp;ADDR<wbr />ESS(11+MAT<wbr />CH(B7,A12:<wbr />A63,0)+B8-<wbr />1,3)))<br />
<br />
Regards<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/11_w47/883970/EE2041119.xlsx" target="_blank" class="file-inline" title="EE (9 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>EE2041119.xlsx</a>
</div>


Maybe this will help

=SUM(INDIRECT(ADDRESS(11+MATCH(B7,A12:A63,0),3)&":"&ADDRESS(11+MATCH(B7,A12:A63,0)+B8-1,3)))

Regards
EE2041119.xlsx [https://filedb.experts-exchange.com/incoming/2014/11_w47/883970/EE2041119.xlsx]

EE2041119.xlsx

<div>
Regardless of where I place your formula, it returns #N/A, except for cells A11..A14. &nbsp;<br />
Obviously I have lost something in translation.
</div>


Regardless of where I place your formula, it returns #N/A, except for cells A11..A14.  
Obviously I have lost something in translation.

<div>
Without your attachement it is difficult to know what you want
</div>


Without your attachement it is difficult to know what you want

<div>
I am sorry. &nbsp;I thought I uploaded the spreadsheet with my original post. &nbsp;It is attached. &nbsp;Your formula appears in cell B9.<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/11_w47/883992/Decline-Curve-Calc.xls" target="_blank" class="file-inline" title="Excel spreadsheet file (30 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Decline-Curve-Calc.xls</a>
</div>


I am sorry.  I thought I uploaded the spreadsheet with my original post.  It is attached.  Your formula appears in cell B9.
Decline-Curve-Calc.xls [https://filedb.experts-exchange.com/incoming/2014/11_w47/883992/Decline-Curve-Calc.xls]

Decline-Curve-Calc.xls

<div>
then pls try<br />
<br />
=SUM(INDIRECT(ADDRESS(14+M<wbr />ATCH(B7,B1<wbr />5:B87,0),3<wbr />)&amp;&quot;:&quot;&amp;ADDR<wbr />ESS(14+MAT<wbr />CH(B7,B15:<wbr />B87,0)+B8-<wbr />1,3)))<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/11_w47/883993/Decline-Curve-CalcV1.xls" target="_blank" class="file-inline" title="EE (30 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Decline-Curve-CalcV1.xls</a>
</div>


then pls try

=SUM(INDIRECT(ADDRESS(14+MATCH(B7,B15:B87,0),3)&":"&ADDRESS(14+MATCH(B7,B15:B87,0)+B8-1,3)))
Decline-Curve-CalcV1.xls [https://filedb.experts-exchange.com/incoming/2014/11_w47/883993/Decline-Curve-CalcV1.xls]

Decline-Curve-CalcV1.xls

<div>
Excellent solution. &nbsp;Thanks.
</div>


<div>
<div class="content wysiwyg-content">
I want to total a range of cells given certain criteria that would identify the first cell in the range to total and XX number of cells afterwards. &nbsp;For instance, In the attached file I am looking to total C25 through C49. &nbsp;(B7 is a user defined date and B8 is the number of cells to be summed.<br />
<br />
Enclosure
</div>
</div>


I want to total a range of cells given certain criteria that would identify the first cell in the range to total and XX number of cells afterwards.  For instance, In the attached file I am looking to total C25 through C49.  (B7 is a user defined date and B8 is the number of cells to be summed.

Enclosure

Sum a range of cells using certain criteria in Excel

A spreadsheet is an interactive computer application program for organization, analysis and storage of data in tabular form. Spreadsheets developed as computerized simulations of paper accounting worksheets. The program operates on data represented as cells of an array, organized in rows and columns. Each cell of the array may contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells.