Difference of Squares
What positive integers can be written as the difference of the squares of two integers?
What positive integers a, b, and c satisfy the equation a2 + b2 = c2? Can you identify more than one solution? Explain.
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Digits, squares, and cycles
Explore fascinating patterns that lurk among the digits of whole numbers.
Blankety-Five Squared is a fun game that will teach you to square two-digit numbers that end in five.
Assorted problems of the day from Highland Middle School.
Can this be done?
Determine the largest six-digit number that can be written following two simple rules.
Submit your idea for an investigation to InterMath.