This product is a set of vintage subtraction flashcards based on a Beka Book publication from 1980. The flashcards cover the subject area of subtraction in mathematics and are designed for educational levels ranging from beginner to advanced. The set includes features such as large print, a teacher's edition, and a box set format, making them a useful homeschooling or classroom resource. Made in the United States, these flashcards offer a unique and classic way to learn and practice subtraction skills.