This set includes flashcards to support 3.NBT.A.3, multiply one-digit whole numbers by multiples of 10 in the range 10-90 using strategies based on place value and properties of operations. There are 48 large, color flashcards for teacher use and 48 black/white, smaller flashcards for student use. There are also 24 cards with missing factors. Thanks for looking and please follow my store for more products, freebies, and sales!