http://www.helpingwithmath.com/by_grade/gr6_worksheets.htm

Just click on the one you want /multiplication, addition, subtraction, division etc.

List of State Education Departments and Related Math Documentation

http://www.helpingwithmath.com/by_grade/education_depts.htm

http://math.about.com/library/xmas6.pdf

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A.P. U.S. History Worksheets

http://www.geocities.com/Athens/Forum/1715/worksheet.html

Sample above link

Below is probably 150 or more printable work sheets of various subjects just click on the ones you want

Printable Worksheets B. Timme’s Resources

http://www.nvnet.org/nvhs/edresource/hubpages/Worksheets.html

scroll through that whole page and i think you’ll find something.

Try typing ‘6th grade worksheets’ into a google search and see what you get. Good luck!