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Pizza Portions

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


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


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

Linked Chains

Age 7 to 11
Challenge Level
Why not try putting some of the chains together and see how far away from a -twenty-link chain you are?  Can you add one or more chains, or take one or more away, to make a twenty-link chain?

Could you replace any of your chains with two or three other small chains to make a new combination?