Concept on Multiplying By 12 [ 4 x 2 ] Method Contn .....
In this , one can mentally multiply any number by 12 if one know the table of 2 or Multiply any number by 15 if one knows the table of 5 . That means actually by using tables from 2-9 , one can actually multiply by tables of 12-19 in an easy way by using the formula.
" Twice the Penultimate and the ultimate ."
Here are some examples given to give a more crystal clear picture of the concept ...Multiplying By 12 [ 4 x 2 Method ] To View the same , Just click on the below video .....