cover image The M&M's Subtraction Book

The M&M's Subtraction Book

Barbara Barbieri McGrath. Charlesbridge Publishing, $16.95 (32pp) ISBN 978-1-57091-358-7

In another numbers-cruncher, The M&M's Subtraction Book by Barbara Barbieri McGrath examines the most logical mathematical property when it comes to chocolate, ""taking away."" Young candy-loving mathematicians can count how many M&Ms are left after they put a couple in their mouths. McGrath identifies parts of a subtraction equation and demonstrates how to borrow from the tens column. .