Addition and Subtraction workbook: This workbook contains progressive exercises of addition, subtraction to start and progress well in mathematics. If your child is having difficulty with calculations, then this book will be a good product for you.6 problems per pageNumbering the exercises (to make it easy to check the key answer)Grid boxes help children to better organize mathematical equations, avoiding mistakes.Answer keyScore / 6Details: black and white interior with white paperPaperback cover finish: Matte Coversize: 8.5 x 11 inNumber of pages: 100Making the book affrodable, I hope that you believe this workbook to be a good value. Important: If you enjoyed this Workbook, please consider to leave us a review, Because, without your voice, we don't existe! Thank you