Two (2) Sets FLASH CARDS - Addition & Subtraction -EARLY Learning - Math Skill Aids - FLASH Cards - TEACHER Classroom 2 packages of Early Education Flash Cards 55 Addition 5 1/4" x 3 1/4" & one sticker sheet 55 Subtraction 5 1/4" x 3 1/4" & 1 sticker sheet Cards are notched for easy sorting Great way to brush up on early math skills