This Math Matters Ser. book, titled “The 100-Pound Problem” by Jennifer Dussling, is a great addition to any young reader’s collection. Published in 2000 by Astra Publishing House, this trade paperback has 32 pages filled with engaging examples and exercises that teach basic math concepts. The book is illustrated by Rebecca Thornburgh and is written in English. It covers topics such as transportation, boats, ships, and underwater craft, as well as general math concepts and counting and numbers. With a weight of 3.4 oz and a size of 9 inches in length and 6.5 inches in width, this book is perfect for any young reader interested in improving their math skills.