REALLY Test Your Math Sense
So, you finished the Approximate Math Sense Test, but your gut's still hungry for more? Take a look at this New York Times article about Fermi problems--questions involving approximation on a massive scale, like "How many water balloons would it take to fill a high school gym?" or "How many pies does Kokopelli throw per year?" Then, if you're up for it, take the Estimation Math Quiz.
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