Math problems with large numbers can be overwhelming. Through our step-by-step progression of activities, your child will easily master addition and subtraction with four-digit numbers. Our workbook builds on basic addition and subtraction skills to teach your child how to confidently compute addition and subtraction with large numbers.Topics Covered in this Book:Addition & subtraction reviewFour-digit vertical form additionFour-digit vertical form subtractionRegrouping (borrowing)Patterns & sequencing