MATH Hacks- Multiplication by 11 without calculator tutorial <br /> <br />ex: answer the following without calculator: <br />11 x 45 = <br />11 x 68 = <br />11 x 99 = <br /> <br />Can you make it without calculator as fast as possible? this apply only if one of the problem to be multiplied is 11 <br /> <br />Do you have any funny videos? submit it here: https://plus.google.com/u/0/communities/117520390586831588188
