The products of these problems (39, 51, 57, 69, 87, 91, and 93) are
often mistaken by students as being prime numbers. These flash cards willhelp your students memorize and identify the factors of these COMPOSITE numbers. Simply cut them out, fold them on the line, and laminate them. There are two sizes of seven cards for your convenience. Enjoy, and happy mathematics!
If you would like different prime number impostor flashcards other than the seven I have in this item, please contact me and I will be happy to fill your order at a discounted price with proof of purchase.