4 digit addition using carry over

Craft up your mind using math

4 digit addition

​4 Digit addition

​Add 6 + 5 =11-------

​put 1 ten on top of tens and put one 1 under ones.

​add 1 + 9 + 2 = 12 -------

​put 1 ten on top of hundreds and two under ten

​add 1 + 1 + 0=2.........

​add 6+3=9...........

Like that you can add 1 digit, 2 digit and 3 digit.......​