This is a simple addition application to help you hone your addition skills. You have 60 seconds to answer as many questions as you can per level. For every correct answer, you gain a point. For every 20 questions you answer correctly, you move up a level. If you answer questions incorrectly, you will lose a second. Answer too many questions incorrectly, you will move down a level. This is graduated learning. Practice and get the high score!