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Pizza Portions

My friends and I love pizza. Can you help us share these pizzas equally?

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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?

In the Money

Age 7 to 11 Challenge Level:

There are a number of coins on a table.
One quarter of the coins show heads.

If I turn over two coins, then one third show heads. How many coins are there altogether?