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Yealmpton Primary School

Yealmpton Primary School

Maths Challenge

Our challenge was to find and calculate how old the oldest tree is in the Orchard. first, we measured 1m from the ground against the tree trunk using a meter stick. Then we measured the circumference of the trunk (measuring to the nearest cm!).  We recorded our results accurately using a table.  Roughly, every 2.5cm of the circumference of the tree represents about one year’s growth.So to estimate the age of a living tree, we divided the circumference by 2.5.For example a tree with a circumference of 40cm will be sixteen years old. 40cm ÷ 2.5 = 16 years old.  The oldest tree that we could measure in the Orchard is 54 years old!

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