Depends on what OS you're working on. On *nix write a bash script to do it, on windows use powershell.
bash:
for i in {1..200}; do touch page$i.html; done;
powershell:
1..200|%{new-item -type file page$_.html}
EDIT:
With new information that the source of the data is a powerpoint presentation, then I recommend making a powerpoint macro to do this.
EDIT 2:
Here is the code you can use to get started:
Sub save()
ActivePresentation.SaveAs FileName:="C:\Export.html", _
FileFormat:=ppSaveAsHTML, EmbedTrueTypeFonts:=msoFalse
End Sub
This will create a folder C:\Export_files. In there you will find html pages for each slide, and some other files. A few customizations and edits and you should be good to go.