In this app, you will test yourself on mental math. First, you will choose if you would like to test addition, subtraction, multiplication, or division. Then this app will give you a math problem and display it on the screen. Now all you have to do is enter your answer into the answer area, by clicking the answer area to pop-up the numbers on the screen. When you are done making your answer, just press the submit button, and the app will tell you if you are right, and it will give you another question! If you would like to go back to pick another topic, all you have to do is press the back button on your phone twice, and you will be back to the home screen. This app will help anyone ages 6 and up. You can either go for a fast time, trying to do the question as fast as possible, or you can make sure that you have accuracy, by taking a bit more time.