looking for math worksheets

[Stacey42]

I need some help finding some worksheets for my oldest to supplement his school work. He just is not getting rounding & number placement, like "round 7216 to the nearest hundred" he puts 7000 instead of 7200 or "which is the number with the highest thousand place number - 23,456 19,346 45,678" and he picks 45,678 instead of 19,346.

I really think it's just lack of practice because he gets it right randomly half the time and I am no good at coming up with my own worksheets.

Does anyone know of any good sites where I can down load some for him to work on at home?

[*Celeste*]

This site is supposed to be quite good...

http://www.khanacademy.org/

I found these. There are a lot of options in Google (math worksheets rounding thousands)
http://www.homeschoolmath.net/worksheets/rounding.php

[Keely~B]

http://www.education.com/ has a ton of great worksheets