You are downloading the Pocket Mathematics XAP file v18.104.22.168 for Windows Phone. Pocket Mathematics is a free Education App: Pocket Mathematics is an easy-to-use, free, education app that covers most of mathematical formulas with descriptions and images. It is perfect for. You can now download the offline XAP package file to install & try it.
Download Locations for Pocket Mathematics 22.214.171.124 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Pocket Mathematics XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.