facts verse presents
math tricks that will blow your mind
number one
what goes in the empty square
there are several math tricks that will
blow your mind on the internet while
some use intricate flash presentations
others are in video or as standard jpeg
files no matter the media platform these
tricks and riddles are designed to
illuminate the mind and exercise our
mathematical skills
one such puzzle is the popular what goes
in the empty square image by simply
looking at the image you will
automatically think of the most obvious
answer however this answer is simply not
correct and you'll have to look at the
puzzle again to really find the correct
integer
so many people across social media
platforms have gotten this one wrong
why not try your luck
number two
multiplying by
while it's easy to multiply any two
digit number by 11 there's an even
easier way to expedite the sum this
trick simply uses the numbers you want
to multiply by 11 without actually using
a calculator for example take the number
43 add four plus three to equal seven
next take seven and put it between four
and three to make 473 to confirm if this
is correct simply use a calculator and
multiply 43 by 11 and you'll get the
exact same result however this formula
does not work with all two-digit numbers
in order to find the best formulas to
secure faster multiplication simply
review the video link below for
additional steps number three
guessing the age
most people are reluctant to tell their
friends and loved ones their real ages
however there is a simple way to guess
the age of your friend relative or even
a co-worker this is also one of the more
popular math tricks that will blow your
mind
simply have your friend multiply his or
her age by 5 and then add 8.
next multiply the results by 2 then
subtract 6 and multiply by 10. ask your
friend to say what number he or she has
and then subtract 100 from that number
the final step is to divide the
remaining number by 100 that will give
you his or her exact
age number four
the answer is two
this is also one of the most popular
math tricks available on the internet in
this scenario simply think of a number
next add four to the number then
multiply the result by 4. the next step
is to divide the result by 4 and finally
take away from your original secret
number the answer is was and will always
be
2.
this simple yet cool trick can be done
with single double or even triple digit
numbers if desired it's also a great way
to learn how to add subtract and divide
without using a regular calculator the
trick also helps embed mathematical
numbers and equations into your mind for
years to come
number five
the answer is five
as part of this series think of any
three digit number next add seven then
multiply by two
you then subtract four then divide the
result by two subtract the original
number you thought of and the answer is
five
again you can double check any answer by
using a regular or online calculator
these simple yet enjoyable exercises
will keep you and your friends occupied
for hours the best part is that you can
try so many different numbers and
integers and always come up with the
same answer
number six
multiplying by nine
another one of the cool math tricks that
will blow your mind is multiplying by
nine in fact you can use the following
trick to multiply any numbers between
one and nine by nine simply hold both
hands out with fingers extended next
drop the finger that corresponds to the
number you're multiplying for example
nine times three simply drop your third
finger next count the fingers before the
dropped finger in this scenario of nine
times three it'll be two this is your
first digit
then count the fingers after in this
case it'll be seven and your final
answer will be twenty seven this does
take a little bit of practice to master
the finger counting technique
number seven
calculating an exact tip
one of the most frustrating experiences
for restaurant enthusiasts is
calculating tips here's a simple formula
to use if you need to leave a 15 tip
first divide the number by 10 then add
that number to half its value and you'll
have your answer for example 15 percent
of 25 dollars that's 10 of 25 plus 10 of
25 divided by 2. so 250 plus 1.25 equals
three seventy five
number eight
multiplying by four
this is an incredibly easy and simple
math trick however so many people have
not heard or seen this before this trick
can easily come in handy for so many
situations that require multiplications
of four in this scenario multiply any
number by four then multiply it by two
and double the answer for example 35
times four
thirty five times two equals seventy
seventy times two equals one hundred
forty thirty five times four equals one
hundred forty
number nine
choose an answer
this is another one of those cool math
tricks that'll blow your mind simply
guess any number then double it next add
12 then divide the total by two and
subtract your original number the answer
will always be six
subscribe for more
[Music]