Number (addition and subtraction): Pelican Formation

Further Challenges

• If the pelicans in another v formation were aged 13, 14, 15, 16, 17, would it be possible for the two arms of the v to have the same combined-age total? How do you know?
• If the total combined-age of the pelicans in each arm is 63, what are the ages of the five pelicans?
• I,2,3 Magic Square is a fabulous problem on the Nrich website that requires persistence and logical reasoning.