Linux Bash Shell - File globbing specific range?

You could also do this:

cp spreadsheet{700..999}.xls folder

This is simpler and also gives you more precision on starting and ending the range (the accepted answer only works if you want to get the same sets of digits for 7xx, 8xx and 9xx).

cp spreadsheet{7,8,9}[0-9][0-9].xls folder

This means starting with 7 or 8 or 9 and with two more digits so therefore 7xx,8xx,9xx