About xmem
This app will help you memories the times table.
Best to start with (1-5 / 1-5)
then (6-9 / 6-9)
then (1-10 / 1-10)
then (1-12 / 11-11)
then (1-12 / 12-12)
etc..
Try not to work out the result but try to remember the result. If you have a strong visual memory try to remember where your fingers press then you can visualize the keypad without the app.