Thomas Jefferson National Accelerator Facility
Jefferson Lab: Place Value Game
This interactive math game lets you create the largest number possible as the computer gives you numbers.
University of Cambridge
University of Cambridge: Nrich: Number Detective
On this one page website sharpen your logic and place value skills while working on this challenge. The solution is available to double check your solution.
ICT Games
Ict Games: Life Guard
See how many people you can rescue. Click the number of tens and ones you need to move down the number line to the rescue. When you get there click the life preserver and then watch your rescue numbers add up.