Top Class Thorough Understanding Arithmetic 2nd Grade. Tests and answers included. Please understand that this item has been used before purchasing! There are check marks and star marks on incorrect answers, and lines drawn in the problem statements. All markings are in pencil, so they can be erased and the book can be used. The edges of the answer key are crumpled (but there are no problems with readability). Please consider this item with the understanding that there may be oversights due to my amateur inspection. m(_ _)m