In this paper, we present simple strategies for performing mathematical calculations that appear magical to most audiences. Specifically, we explain how to square large numbers, memorize pi to 100 places and determine the day of the week of any given date.
© 2004 Tarquin
Benjamin, A.T. (2004). Mathematical magic. In Sarhangi, R. and Sequin, C., editors. Bridges: Mathematical Connections in Art, Music, and Science, Conference Proceedings 2004. London: Tarquin, 2004.
First published in Bridges: Mathematical Connections in Art, Music, and Science; Conference Proceedings 2004, (Reza. Sarhangi and Carlo Sequin, Eds.), pp. 259-263, 2004.