help with multiply division/multapacation 12s

here is a little trick ofmine for 12s.
well the 12s are 12,24,36,48,6072,84,96,108,120,132 and 144. the trick is you see the nubers and the first one is easy beacause it's 12.2nd 24 just know that one. 3rd36. see that one is one ten and one two more.then 48. but then 60. then do the one ten and two again until you get to 108 . then memorize 108,120,132 and 144