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What Could It Be?

Age 5 to 7
Challenge Level Yellow star
Primary curriculum
  • Problem
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What Could It Be? printable sheet

In the calculation below, the box represents a missing digit:



What could go in the box? What would the total be each time?

Which is the highest/lowest total?

Which totals are odd/even?

Related Collections

  • Back to NRICH at Every Stage resources

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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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