Addition School ! ! is a great way to learn and practice addition. From simple 1-digit problems to more advanced multi-digit problems, Addition School ! ! will provide the user the necessary guidance and practice to master addition. Features of this version: 1) 2 or 3 numbers to add (addends) 2) 1 to 6 digits in each addend 3) Random or custom user entered problems 4) Tutorial animation speed setting 5) "Play Tutorial" button to show the step by step solution for each problem 6) "Hint" button for instructional guidance on current step 7) "Help" button for automatic completion of current step If you like this app, please consider giving it a rating. Your support will help keep the updates coming! Thank you for your support!