Penta Primes

Problem | Teachers' Notes | Hint | Solution | Printable page |
Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Why do this problem?

This problem provides a real challenge for learners who enjoy working with numbers and will help children consolidate their understanding of prime numbers.


Possible extension

George Miller, a middle school teacher, suggests a slight twist to the problem as a follow-up: Who can find a solution that has the highest sum when all five numbers are added together? 

Possible support

Having digit cards for children to manipulate will help them access this task through trial and improvement.


Published January 2003.