Do you need a calculator to work out your shopping bill? This is a free sampler app to show you what the 4 Brain apps can do. Would you like to get some practice in doing basic or decimal arithmetic, multiplication or fractions in your head? This free app will demonstrate how you can now use your Palm Pre to improve your speed with practice with 10 randomly selected questions from each of the family of Brain apps. When you finish each set of questions you'll have an opportunity the install the full app, which will give you more choice over the type of questions you are tested on, and will keep your highest scores to help you improve.