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What numbers are at the top of the dominoes?
What number could come between them? Why?

What numbers are at the bottom of the three dominoes?
What number could come between them? Why?

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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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