Archive for the ‘Fast Arithmetic’ Category

Numerical memory in young chimps vs. adult humans - guess who wins?

Wednesday, December 5th, 2007

It's reminiscent of those Planet of the Apes movies. Apes are smart. Humans are stupid. ScienceDaily just ran this article: Young Chimps Top Adult Humans in Numerical Memory. Young chimps and adult humans played this game where some numbers were displayed on a screen in some, I'm-sure, hard to remember order ...

Mathcast #2: Quick multiplication of two 2-digit numbers

Saturday, December 1st, 2007

I've produced a second mathcast, this one using Camtasia screen recorder. I've posted the mathcast on You Tube and you can watch it right here without leaving the blog. This video shows you how to quickly multiply together a pair of two digit numbers without having to write down the ...

The first ever Wild About Math! mathcast

Thursday, November 29th, 2007

Ever since starting this blog a couple of months ago I have felt that text and graphics could only go so far in helping people to get wild about Math. I knew that video was the next step in helping to explain mathematical ideas and in getting more people engaged ...

Quick multiplication by 12: A gentle introduction to Trachtenberg speed mathematics

Friday, November 23rd, 2007

Judging by the comments I've received on the blog there's a good amount of interest in techniques for simplifying and speeding up basic arithmetic. This is great because I enjoy learning and writing about these techniques. Jakow Trachtenberg was a Ukranian mathematician who, while imprisoned in a Nazi concentration camp during ...

Impress your friends with mental Math tricks

Sunday, November 11th, 2007

See Math tricks on video at the Wild About Math! mathcasts page. _____________________ Being able to perform arithmetic quickly and mentally can greatly boost your self-esteem, especially if you don't consider yourself to be very good at Math. And, getting comfortable with arithmetic might just motivate you to dive deeper into other ...

How to square large numbers quickly (part 1)

Sunday, November 4th, 2007

I have to confess, one of my secret addictions is scouring Math books for novel approaches to solving old problems. I especially like to look for these fresh approaches in, ironically enough, old books. Last night I was perusing a little book: "The Master System of Short Method Arithmetic and Mechanical ...