You could do this a couple of ways,
if you have access to your .htaccess-file & are comfortable editing it:
- https://superuser.com/questions/155139/htaccess-301-redirect-with-regular-expressions
- https://stackoverflow.com/questions/16665672/using-regular-expression-in-htaccess-for-301-redirects
You can workout a regex to do it…
RedirectMatch /example-here/(.+) http://www.exapmles.com/blog/example-here/$1 [R=301,L]
or use a redirect plugin to create the redirects you want. here’s a couple options: