Brainteasers

14th May 2004 at 01:00
Puzzles to test mathematical skills, set by Anita Straker. Solutions below More brainteasers on www.tes.co.ukteacherbrainteasers

Ages 5-7

Ice creams

Ben puts three scoops of ice cream in a cone.

He can choose from vanilla, strawberry and chocolate.

The scoops can be the same or different.

How many different cones can Ben make?

Can you draw them all?

Ages 13-15

Cherry picking

Noor can pick 1kg of cherries in 1.5 minutes. Darwish can pick 1kg of cherries in 2 minutes.

Together, Noor and Darwish spend a morning picking cherries.What fraction of the cherries does Noor pick?

SOLUTIONS Ice creams Ben can make 3 x 3 x 3 = 27 different ice creams.

Cherry picking After m minutes, Noor has picked m15kg and Darwish has picked m2kg of cherries, a total of 2m3 + m2 = 7m6kg. Noor's share is 2m3 of the total 7m6, which is 47.

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