How many addition flashcards can you solve in 30 seconds? Addition Flash Cards helps you learn & master addition through a fun addition quiz by giving you a series of random addition equations to solve in a 30 second time frame. Over time, your brain will get better and faster at adding with each addition quiz that you take. Whether you’re a 3rd grade math or 4th grade math student, teacher, parent or just someone looking to improve on your addition, this addition game is for you! So really, how many addition flashcards can you solve in 30 seconds? Take the addition Flash Cards quiz to find out.