Be Human Calculator

http://www.glad2teach.co.uk/fast_math...




In just 4 minutes learn to calculate faster than any calculator. Your can power-up your weak Math muscle and turn it into a bulging bicep.

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Closed Caption:

hi
ok before i start this class I would
like to ask you a question
cross your heart and tell me do you
actually believe that your mind can
calculate faster than the calculator
I certainly do and with every video I'm
going to make you believe in your own
mathematical ability grow stronger and
I'm not going to stop they'll actually
make you throw your calculator outside
the window
alright so here goes another easy can
trick for you can you find out what is
98 times
97 in five seconds
good ok so your tanks that's now I think
the time is up
the answer is 95 06
well those who could not calculate don't
get disheartened because you know that
you just have to learn this trick and
then you'll be able to multiply any
numbers that are closer to beasts
hundred in less than five seconds
the
smarter way of multiplying 98 times 97
would be
transom was it too fast for you to
follow
so let me give you a very slow motion
action replay of what I have gesture
ok so what I have done here that i have
used the same base method of
multiplication that you must have
learned in the last video
the base here right to get it right it
is a hundred now
97 is three less than hundred so i put -
3:00 here and 98 right is minus 2 less
than a hundred now in a cross fashion
i subtract from 90 this 3 so 19-3 is 95
and you'll get the first two digits or
97 - - and 95
so whether you do 98 - Lee or 97 - 21
only same thing
all right and for the last two digits
what we do we times this
so minus two x minus 3 is right
positive 6 but the base here is hundred
so there are two places to go
so we put 06 year you try to find out
this time
alright so what is 95 x 99
ok so first step in this second step 9 x
minus one is 94 and the answer is 9405
see so simple it is that you must try to
do it mentally in the next Rick video
that is easy cal eat
we would be learning how to multiply the
numbers about hundred like what is
hundred and four times hundred and seven
what is hundred five times hundred and
nine
thanks for watching this video take care