This lesson explores a unique pattern for multiplying numbers by themselves (squaring) if all its digits are 1. By using the pattern, it's possible to solve complex calculations without a calculator. For example, by counting up to the number of ones and then back down to 1, you can solve any number up to 9 ones in a row. It's a fun and useful trick that can be shared with friends and family.
A fun pattern for multiplying numbers by themselves (squaring) if all its digits are 1....like 11 x 11 or 11111 x 11111, etc. Show your friends!
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com