Get a bigger keyboard. Logitech makes a thin full sized board (wired or wireless) that I use with my tablet after I got tired of the tiny blue tooth keyboard.
Link
or
get a cheap usb numeric pad.
Link
This is my full time keyboard..its really a very nice keyboard,I like it for the soft light touch it takes to use it and is very quiet and its compact,but not too compact and even though its really thin,i dont get any bending sensation when using it.....