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Number and algebra

  • The Number System and Place Value
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Advanced mathematics

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For younger learners

  • Early Years Foundation Stage

Sharpen Your Skills

Sharpen your Skills

Practising a mathematical skill doesn't need to be tedious... dust off your angle, algebra and adding fractions skills, and put them to good use solving this set of problems!

Almost One 
Age 11 to 14
Challenge Level Yellow star

Choose some fractions and add them together. Can you get close to 1?

Triangles in Circles 
Age 11 to 14
Challenge Level Yellow star

Can you find triangles on a 9-point circle? Can you work out their angles?

Cyclic Quadrilaterals 
Age 11 to 16
Challenge Level Yellow star

Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?

The Simple Life 
Age 11 to 14
Challenge Level Yellow starYellow star

The answer is $5x+8y$... What was the question?

Related

  • Hidden Treasures
  • Short Problem Showcase

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Patterns in Number Sequences

These resources are designed to get you thinking about number sequences and patterns.

Secondary Student Latest

Latest list for the Lower Secondary Student page

Curriculum Topics

Problems organised by curriculum topic for lower secondary students.

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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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