Math Puzzles
Arithmetic
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Dividing the Estate
In this puzzle we invite you to figure out how to divide up this estate as specified in the will.
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Hours, Minutes, and Seconds
A clock is a complicated measuring device. There are three scales superimposed on each other, one for hours and one for minutes and one for seconds.
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Is It a Sale?
A crowd gathered outside the electronics store. The window display was filled with radios, TVs, computers, and other electronic devices.
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Magic Squares
Magic squares puzzles are among the most ancient in mathematics. Can you create magic squares with the numbers 1-9?
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Make It True
See how many true mathematical sentences you can make out of a given collection of numbers.
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