abhi7605 wrote this blog titled "Vedic Maths - multiplication by 12"

Vedic Maths - multiplication by 12

step 1 – add 0 in the front of the no.

step 2 - double the last number write it

 step 3 - add the number to the left  

example 1 - 37 x 12

step 1 – add 0 in the front of the no.

037

step 2 - double the last number write it

14 (1 will go as carry to the next no.)

 step 3 – double the next no. and add to the right no.

double of 3 is 6 + no. in right(7) + 1(carry)

14 (1 will go as carry to the next no.)

0 + 3 = 3 + 1(carry) = 4

So the final Ans will be 444

example 2 - 812 x 12

step 1 – add 0 in the front of the no.

0812

step 2 - double the last number write it

4

 step 3 – double the next no. and add to the right no.

--double of 1 is 2 + no. in right is 2

4

--double of 8 is 16 + no. in right is 1

17 ( 1 will go as carry to the next no.)

--double of 0 is 0 + no. in right is 8

8 + 1(carry)

So the final Ans will be 9744

example 3 - 7132 x 12

step 1 – add 0 in the front of the no.

07132

step 2 - double the last number write it

4

 step 3 – double the next no. and add to the right no.

--double of 3 is 6 + no. in right is 2

8

--double of 1 is 2 + no. in right is 3

5

--double of 7 is 14 + no. in right is 1

14 + 1 = 15 ( 1 will go as carry to the next no.)

--double of 0 is 0 + no. in right is 7

7 + 1 (carry) =8

So the final Ans will be 85584