Are you having trouble with two-digit addition? How about three-digit addition? Does column addition confuse you? Do you wish someone could simply explain the properties of addition? Well, ask no more! In a simple and direct style, Rebecca Wingard-Nelson covers topics such as partial sums, regrouping, and place value. Whether you are learning this information for the first time—on your own or with a tutor—or you would like to review your math skills, this book will be a great choice.