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Grandma found her pie balanced on the scale with two weights and a quarter of a pie. So how heavy was each pie?

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Red Balloons, Blue Balloons

Katie and Will have some balloons. Will's balloon burst at exactly the same size as Katie's at the beginning of a puff. How many puffs had Will done before his balloon burst?

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In the Money

One quarter of these coins are heads but when I turn over two coins, one third are heads. How many coins are there?

Pizza Portions

Age 7 to 11 Challenge Level:
There are lots of answers to this problem, depending on what questions you choose to ask.

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