PiCalc - PiCalc is a utility that calculates the number pi down to 20,000 decimal places. As the site explains, the interest of such a program lies in testing your machine's processor speed.
Then you can compare your score with those available on the program's web site
Pocket Life -Conway's Game of Life (aka "Life") is a mathematical toy which was discovered in 1970 and has been ported to almost every single kind of computer since then. I could not find a version for the Pocket PC, so I wrote one myself
Pocket Math is an interactive set of math flash cards that includes Addition, Subtraction, Multiplication, and Division for Pocket PC devices. Use Pocket Math to work on your child's math skills wherever you carry your PDA
Math is NOT terrible when you have Pocket Math Book
Who discovered the binomial theorem?
What is derivative and what is integral?
What is Fourier Series and Gibbs phenomenon?
How about you if your teacher or kids ask you these questions about math?
Math is scary and terrible enough for some people
Pocket Math Facts is a program to improve your child''s mathematical skills, both accuracy and speed. Supports both Timed tests and total number of facts, four different operators (+, -, x, /), and focus on problem facts
Pocket Solver - Pocket Solver allows you to solve equations on your Pocket PC. You type in an equation and enter values for all but one of the variables. Unlike a spreadsheet or calculator, any unknown variable can be found without having to rearrange the equation.
Pocket Solver isn't just limited to performing everyday calculations
PocketMath - PocketMath is an advanced graphing calculator for the PocketPC platform:
Advanced plotting capabilities: Explicit, parametric, and implicit plotting in 2-D and 3-D using built-in or custom coordinate systems, and custom plotting of points, lines, polyhedra, etc. The PocketMath website has a gallery of some of the plots the software is capable of
Polynomial Suite Script for Math Tablet - Polynomial evaluation and arithmetic including division with remainders; polynomial GCD and LCM; exact roots up to 4th order, plus others.
Unzip the file and install the script into your Script Directory
Primes Script for Math Tablet - Calculates the prime factors of a number.
Unzip the file and install the script into your Script Directory. To view the script help, select the "?" from the variable and functions dialog or tap and hold on a key assigned to the function
RealCalculator includes a scientific calculator, a function-plotter, a function calculator (symbolic derivation, simplifying expressions), a matrix calculator (both real and complex numbers), a calculator for complex numbers, a computer-calculator (hexadecimal / binary)