Fraction - Class 6 Video Lecture

hello friends this video on fractions
part 1 is brought to you by exam viacom
no more fear from exam topics to be
covered in this lesson our introduction
fractions fractions or number line types
of fractions wedding will discuss proper
improper and mixed fractions equivalent
fractions like in the light fractions
simplest form of a fraction comparing
fractions addition of fractions and
subtraction of fractions so fractions
you might be curious to know what are
they so let us look at these examples
many came back from her school and she
was very excited that she is old 95%
maths in maths so what is this 95 this
95 is nothing but a number to be more
precise it is a whole number or a
natural number whatever you call it
right sometimes you go out with your
parents and you get balloons for
yourself and you see very happily that I
have 5 balloons so when you count these
number of balloons and you decide that
you have 5 of them what is 5 5 is again
a number to be more precise a whole
number you look at the time and you see
that at 6 p.m. what is 6 so 6 again is
nothing but a number or a whole number
or a natural number so 95 5 6 these are
all examples of whole numbers now let's
say that when you eat just a small part
of a pizza so this is the complete pizza
but you just eat a small slice of it so
how do you express it that ok I eat just
a small part of the pizza now if you say
that I ate one pizza will that mean that
you ate one slice of pizza not really
that would mean that you ate one
complete pizza but did you eat the
complete pizza no you just ate a small
slice of it now if you say that I ate
one slice of pizza
now somebody who is listening to you how
would that person understand that how
much is one slice now a pizza can be cut
into maybe 20 slices such that each
slice is very thin it is also possible
that the same pizza is just divided into
two slices such that each slice is like
almost half of the pizza so how would
the other person know how much does one
slice mean so even saying that I eat one
slice of a pizza doesn't really make a
lot of sense so what do you do in this
case so in this case what you do is you
say that I eat 1/5 of the pizza now what
is this 1/5 this means that I eat one
slice out of five slices of the pizza it
means if you assume that the pizza was
divided into five equal slices like 1 2
3 4 and 5 then I ate one of those 5
equal slices so if I ate one slice out
of 5 slices
so this 1/5 of the pizza doesn't matter
how big the pizza is but this would
always convey that if that pizza is
divided into five parts you just ate one
part of it just so expressing this thing
as 1 by 5 solve the purpose so this 1 by
5 is nothing but a fraction so when you
look at 1 by 5 you see that it has two
numbers 1 and 5 and both these numbers
have been put together to form a
fraction and fraction perfectly solves
this purpose where you want to express
that you eat some parts out of the total
number of parts so this is fraction and
we are going to discuss in more detail
about fractions in this lesson let us
look at another example let's say that
there are 4 kids in your house and you
have a total of 2 muffins
now since you have 4 kids and you want
to distribute these two muffins amongst
them so what would you do will it be
nice if you just give 1 1
two of them and do not give anything to
the rest of the two that would not look
nice so what should you do you should do
something such that each one of them
gets equal amount of muffin so what
would you do you would divide each
muffin into half and you would give half
muffin to each of them so how much of
the muffin did each of them get what
fraction of the muffin did they get take
it 1 by 2 that means if you divide the
muffin into two equal parts so one part
out of those two equal parts has been
received by each child so you see here
it was the total muffin which was
divided into two equal parts like one
and two so one part out of the two equal
parts is half and this half is nothing
but an example of a fraction so now even
before we start talking about or if we
start before we define fractions let us
quickly look at the different types of
numbers which already existed before
fractions natural numbers those numbers
which come very naturally to us for
example you ask a three-year-old kid to
count so how does that child found the
child starts counting from 1 2 3 4 5 6 7
8 and so on so all these numbers
starting from 1 till infinity
they all are called natural numbers
because they come naturally to us the
second type of numbers are the whole
numbers and whole numbers are nothing
but 0 1 2 3 till infinity so basically
all natural numbers along with 0 are
called whole numbers then we have
integers so integers are basically all
the whole numbers that is 0 1 2 3 4 5 6
till infinity plus the negative numbers
so all the positive numbers negative
numbers plus 0 so all of these together
come under integers so these are the
three types of numbers which already
existed which we already know about them
now the question is
while fractions why do we even need
fractions do we need them of course we
need them that is why they exist so that
we can conveniently Express how much of
a pizza did we eat yes Pizza is one of
the very good examples to understand
fractions now as I told you that when
you eat one slice of a pizza how much
did you eat
you need some number which can very
clearly describe that fact or express
that fact so if you say that I ate 1/5
of a pizza that means that if the pizza
is divided into five equal slices then
you eat one slice of the pizza or if
whether you eat one complete pizza or
you ate one and a half pizza that is one
complete pizza plus half of another
pizza so that would be one one and a
half so one one-and-a-half is an example
of fraction one fifth is an example of
fraction four by five that means you ate
four slices out of five slices of the
pizza so for my file is an example of a
fraction so these are all examples of
fractions and in order to describe such
scenario we do need numbers like
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