Fun with Math - 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.

Stump the Shrink by Dr. Philip Copitch: Is Tutoring Right For My Child  with Guest Blogger: Geri Copitch, 18 Year Veteran Educator.

Arthur Benjamin book for older children:

If you are looking for a good book to start young children to learn the fun of math, I find Pigs Will Be Pigs: Fun with Math and Money, is a good start.