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Age 7 to 11
Challenge Level
Why do this problem?
This problem is one that would be suitable for learners who are looking at measurement, regular polygons or revising the addition and subtraction of numbers to 100. It requires logical thinking and careful reading of the questions asked.Key questions
How long are each of the sides of every shape?
What is the perimeter of a
hexagon/square/triangle/octagon?
What shapes does the problem say Ben drew?
Possible extension
Learners could make a table of their results.Possible support
Suggest starting by drawing each the shapes and writing underneath how many metres the perimeter of each would be.
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.