BORSE Classes

THE 11 TRICK!!
Multiplying any two digit number by 11:

Example: 36 x 11

1) Write the first and second digit of the two digit number on each end of the solution.

Example: 36 x 11 = 3 ___ 6

2) The middle digit of the solution will be the sum of the first and second digits of the two digit number.

Example: 3_(3+6)_6=396

This is true for any other two digit number being multiplied by 11
13 x 11 = 1_(1+3)_3
Ans. : 143