Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?
Age 7 to 11 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.