But what about larger numbers times 11

After Prof. Benjamin's video last week, a few smart alecks pointed out, "But that is only 2 digits, how about larger numbers?" Fair question. I know two ways to multiply larger numbers by 11- both fun! In a few minutes you will know both!

Dr. Phil has fun with a little math.

  Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks

A few fun gifts for young math students:

  Pigs Will Be Pigs: Fun with Math and Money (Aladdin Picture Books)

  Think Fun Math Dice

  Fun with Math Read-Along Set

Math Wizard Prof. Arthur Benjamin

Lots of people wanted more information about math professor and magician, Arthur Benjamin.

His bio reads: 

Arthur Benjamin is a professor of mathematics at Harvey Mudd College in Claremont, California. A professional magician, Benjamin can also multiply large numbers faster than a calculator, figure out the week day of any date in history and has memorized the decimal numbers of pi out to 100 digits.

Let's look at him teaching how to multiply by 11 quickly!








Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks