A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
In cell A5, enter the formula
=INDIRECT("'sheet " & (ROW()-ROW($A$5)+1) & "'!B11")
then fill down to A7 (or further down if needed). Please note that there is a single quote (apostrophe) before the word sheet and and also before the exclamation mark ! in the formula.