Bluey-green, white and transparent squares with a few odd bits of
shapes around the perimeter. But, how many squares are there of
each type in the complete circle? Study the picture and make an
Age 7 to 14 Challenge Level
How could you get close to the target?
How could you use rounding and estimation to help?
You might like to start by working on the level 1 and 2 problems initially, and then comparing your answer to the available solutions.
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.