1. 2 (1+1=)
2. two (one+one=)
3. 11 (complete the row, +1 | +2 | +3 |...)
4. takes (slide letters down)
5. fibonacci (row of...)
6. helios type the sum in your calc and turn it upside down)
7. facade (music notes in bass key)
8. 1311221113312211 (one three, one one, two twos, one one, one three, three ones, two twos and one one in row above)
9. subject (morse code in blinking dot)
and that's as far as I get... Devious little game this :)