M, M and M

Stage: 3 Challenge Level: Challenge Level:1

Try arranging all sets of numbers in order, smallest to biggest. Which of the five positions are the easiest to fill in?
If you can think of lots of possible values for one space, try to figure out the highest and the lowest it could be, and whether there are any other conditions...

Which spaces can you fill straight away?

This might help.

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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