¿This math practice book is a fun and engaging way to reinforce one of the fundamental basic skills of early mathematical development: addition and subtraction. Let your child practice the 3 operations: addition and subtraction, mentally and on paper. The exercises will encourage him to think and calculate, and to write the answers. These worksheets that help students to learn how to add and subtract and are ideal for young learners or those with a learning disability. Get this Game book to reinforce learning on addition and subtraction. The activities in this book help children practice the carry-over concept for addition and subtraction. Features: ¿Addition Practice ¿Missing number addition ¿Subtraction Practice ¿Missing number subtraction