2 videos in "Numbers and Number Patterns"
Fun Pattern squaring numbers whose digits are all ones
Fun Pattern squaring numbers whose digits are all ones
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Meets these NCTM Standards:
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
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!
- What are some fun number patterns?
- What is the pattern when all ones are squared?
- What is 111^2, 11111^2, and 111111111^2?
This lesson is a cute little trick for squaring numbers that have only 1s in them. The pattern is pretty cool, and it works all the way up to 111111111^2.
What about numbers with more than 9 1s in them?
I think she's fun! That's cool ^^
