This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?
Stage: 2 Challenge Level:
You might like to start with $5$. Follow the operations in order -
add $3$, multiply by $5$, take away $2$. What comes out?
How could you get from $2$
to $22$ ? Will those same operations turn $3$ into $28$?
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.