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Find the Difference

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

Place the numbers $1$ to $6$ in the circles so that each number is the difference between the two numbers just below it.

6 circles
Example:   $5 - 2 = 3$

You could try it in this interactivity.
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When you have tried this and got more than one answer you could try other things like having $4$ rows of discs and use the number $1$ to $10$

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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