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Broad Topics > Numbers and the Number System

TopicResources availableNumber - generally58Properties of numbers86Reading and writing numbers14Counting79Integers44Countability3Digital roots6Number theory33Representing numbers19Comparing and Ordering numbers61Odd and even numbers73Place value96Rounding3Patterned numbers69Square numbers31Triangle numbers20Cube numbers4Factors and multiples194Divisibility67Common factors23Prime numbers25Prime factors21Positive-negative numbers22Powers & roots51Standard index form/Scientific notation2Factorials13Real numbers2Rational and irrational numbers24Pi4Surds20Infinity8Number bases30Modulus arithmetic51
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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. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.