Multiplication Tips for 2 digit number

Example: 26 x 31 (Vertically and Crosswise)

Step1:

2 6
x
3 1
------
------


Step 2

= (2 x 3) {(2 x 1) + (6 x 3)} (6 x 1)

= 6 ₂ 0 6

(nb: the "2" of the "20" is carried over to the left hand side).

= 8 0 6

Result = 806