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Multiplication Tables - Matching Cards

Interactive game. Set your own level of challenge, practise your table skills and beat your previous best score.

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Weekly Problem 49 - 2013

weekly problem 49 - 2013

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Weekly Problem 14 - 2008

The numbers 72, 8, 24, 10, 5, 45, 36, 15 are grouped in pairs so that each pair has the same product. Which number is paired with 10?

Thousands and Millions

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

You could start by selecting some of the questions you consider to be easier.

You could try changing the 1000000 to 100 to make the problem simpler while you establish a correct method.

You might want to do a little research or experimentation to get some numbers to work with.
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.