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Just Jottings (16-18)

This collection of tasks is part of the activities for 16-18 year olds section of the Maths At Home feature. All you need to get started is a pencil and paper! The stars represent the challenge level, with three stars indicating the most challenging activities. 

You may also wish to explore Just Jottings for 14-16 year olds.

Why 24?

Age 14 to 16
Challenge Level Yellow starYellow star

Take any prime number greater than 3 , square it and subtract one. Working on the building blocks will help you to explain what is special about your results.

Dating Made Easier

Age 14 to 16
Challenge Level Yellow starYellow starYellow star

If a sum invested gains 10% each year how long before it has doubled its value?

Root Hunter

Age 16 to 18
Challenge Level Yellow star

In this short problem, try to find the location of the roots of some unusual functions by finding where they change sign.

Partly Circles

Age 14 to 16
Challenge Level Yellow starYellow starYellow star

What is the same and what is different about these circle questions? What connections can you make?

Curved Square

Age 16 to 18
Challenge Level Yellow star

Can you find the area of the central part of this shape? Can you do it in more than one way?

Quick Sum

Age 16 to 18
ShortChallenge Level Yellow star

Is this surd sum exactly 3?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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