Hartismere School

An outstanding coeducational secondary school and sixth form college

The Addams Family Musical

13th to 16th March 2019
Tickets now on sale

Squaring numbers trick

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Visit for more http://www.glad2teach.co.uk/fast_math...
Become Harry Potter of Mathematics.
In 5 mins reprogram your mind to calculate faster than the Calculator itself. Impress others with your super-fast mental mathematics.