The fun way to learn, with all these unique benefits : 1 digit, 2 digit, and 3 digit math problems. - Three levels of difficulty to build confidence. - Includes certificates to reward achievement. - Full answers included. - Large print format Written by an American English teacher for the highest quality Unlike other word search books which are made overseas, this word search book has been written by an American English teacher, allowing for the highest standards of quality. Other books available Seven books are available in this series including addition, subtraction, multiplication, and division formats. The book on this page is Book 5: Addition & Subtraction. Give a quality gift that will help kids learn!