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One Big Triangle

Stage: 1 Challenge Level: Challenge Level:1


Drag and drop these triangles so that the numbers that touch add up to $10$
Try to use all the small triangles and move them to fill in all the spaces in the big triangle.
 

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You can also print out these triangles, cut them out and rearrange them to make the big triangle.


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.