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Pizza Portions

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

Doughnut

How can you cut a doughnut into 8 equal pieces with only three cuts of a knife?

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?

Pies

Age 7 to 11
Challenge Level
What are you trying to find out?
What do the two weights weigh altogether?
If you took the quarter pie off the scales, what could you do to the whole pie to make the scales balance?