Pi 100 Challenge

Calculate Pi by Hand

Some people climb mountains, while others run marathons. You are challenging yourself to calculate Pi by hand. This app guides you through all the steps needed to compute Pi to 100 decimal places. Surprisingly enough, this doesn't require any complex math -- just basic addition, subtraction, multiplication and long division. Each page presents one problem to solve. Complete the problem, and move on to the next step. Take the Pi-100 Challenge, sharpen your mind, and calculate Pi.

GameCenter integration allows you to track progress and achievements. Leaderboards allow you to race against your friends to see who can finish more digits, or solve for the digits faster.


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