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The world record holder for fastest calculations in his head. Scott Flansburg talks with a group of kids from Australia about math and how to think differently about it to make it fun.

For those of you that think being able to do large math problems in your head faster than a calculator is impossible, you need to know about Scott Flansburg. Scott, actually John, Flansburg is known as the human calculator. He is famous for many things involving math probably the biggest is being able to beat the fastest ten key operators in addition, and he does it all in his head.

This video is a quick tutorial on multiplying two digit numbers in your head using a base 100 principle. Very easy to understand, takes just a little bit of practice to master.

This video demonstrates how to to take two two digit numbers and quickly multiply them together in your head faster than on paper or with a little practice faster than with a calculator.