Smart Flashcards Subtraction 2 is a deck of interactive flashcards in book format. Each page has a card with a math problem that flips over to show the answer when you tap on it. Each card also has an animated help screen which explains the answer for the math problem.
Subtraction 2 helps users learn how to subtract with larger numbers. The animated help demonstrates the grouping of numbers in ones, tens, and hundreds and how to "borrow" from the next column. Each solution is explained step-by-step, focusing on each colum in sequence, and showing the arithmetic for each column. Altogether, there are 100 flashcards in this app.