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Harry Age 4, Maths Genius - Maths Trick - How to Square Any Number Between 100 and 109

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Uploaded by on Jul 8, 2009

Harry Chapple, MENSA member, age 4, child maths genius, latest video to show how to square (multiply by itself) any number between 100 and 109.

Simpleto teach math and easy to remember, gives math help for children and adults to learn better maths.

In the video Harry demonstrates his maths trick with 109 times 109, but the same method works with any number in the range.

Category:

Education

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License:

Standard YouTube License

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Top Comments

  • haha wow at first i thought he was writing log instead of 109.  i was about to be floored lol.

  • He is smart and cute. =D

    Cheers.

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All Comments (8)

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  • keep it up! xx

  • i can use mentally in 4 sec

  • Does he know all his timetables yet?

  • haha,pretty nice,if u can multiply 3 digit numbers in your head,u can find square of any number beethween 1-520

  • wow he has better hand writing than me and im ten lol!!

  • i love u man u r so cute n genius keep it up

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