Math!: Addition

I have some tips for you for math:                                       

                    1                

Adition:    23

                   29                                                      

                  ---

                    5 2

Do you know the way I got that answer? 

9+3=12, but 12 can't fit into 1 didget, so you

travel on to the ten's colum. Now you add the 10's 

column. 2+2=4. You also add the 1 from the 1's

column so 4+1=5. Then you put together the 

two digets and you get.... 52!