Does your child need to practice Addition and Subtraction within 10? This book contains lots of math worksheets to improve a child's success in class with 90 practice sheets and 800 problems. - The Great Tool for Children to Practice basic adding and subtracting by using picture counting, equation, and number bonds. - They are both mixed (addition and subtraction) and separated (just addition, just subtraction). - The worksheets had answer guide boxes to help and hint students to the correct answer. - The Answer key is included in the back of this book so children can check their answers.