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Featured
Adding Three Digit Numbers
Posted on September 20th, 2009 by kramer
Open the attached file for a step by step method of adding three digit numbers vertically with carries.
Add the populations of the world's 20 largest cities.
Posted on September 20th, 2009 by kramer
Remember to line up the place values starting with the "one's place."
See attachment.
The Great Wall of China (9-14 thru 9-17)
Posted on September 14th, 2009 by Anonymous Mathlete
Please attempt each of the following (EARN MATHLETE DOLLARS):
Prime Factorization - Alien Language
Posted on May 15th, 2009 by kramer
In 1974 Carl Sagan, the famous astronomer, sent a message coded only in prime numbers into outer space. He believed that the live in outerspace would speak in the universal language of prime numbers. This message will take 25,000 years to reach the next gallaxy.
We learned how to factor all numbers into their primes using factor trees.
