Recently you have been introduced to some handy tricks for crunching bigger numbers in your heads. As promised, attached are the links to two of those spectacular videos by our favourite maths guru at Tecmath.
Practice these techniques and in no time you’ll be faster than a calculator!
This one looks at multiplying numbers under twenty:
http://www.youtube.com/watch?v=SEupqNi2Rh8
This one looks at multiplying numbers above twenty:
http://www.youtube.com/watch?v=SV1dC1KAl_U

Can you beat the calculator?