This is a set of two books: Standard New Exercises, Math for 1st and 2nd Year Junior High School Students (with answers and explanations)! They have been used. There were a few pages with pencil markings, but they have been erased. Also, there is one page with a line drawn with a highlighter, but it should not be a problem for use. Please understand that these items have been handled by someone else. Instant purchase is OK. Thank you very much (⋆ᴗ͈ˬᴗ͈)”