Simple to Teach Maths Trick – How to Square Any Number Between 100 and 109 by Harry age 4

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.

Duration : 0:1:35

[youtube mbjRZ2tguJU]