Estimating to nearest Thousand by rounding Off
Suppose, you and your brother are going to market.
And you both have total
$12000$
rupees.
In market, you buy clothes and your brother buys some books.
For clothes, you spend about Rs
$6000$
.
And, your brother who bought books spend
$4300$
rupees.
Then, you ask him how much money is still left.
He answers that we have about
$2000$
rupees left.
Now, you become curious about the calculation done by him.
So, you ask him about it and he replies that he has rounded off to make calculation easier.
Let's see how do we round off the number to nearest thousands.
Letâ€™s consider the numbers from
$0$
to
$1000$
.
Here, we observe that numbers which are less than
$500$
are closer to
$0$
in comparison with
$1000$
.
So, they can be rounded off to
$0$
And the numbers
$501$
to
$999$
are closer to
$1000$
in comparison with zero.
So, we can round off them to
$1000$
.
And the number
$500$
is equidistant from both
$0$
and
$1000$
, but we round it off as
$1000$
.
Suppose, we consider
$4$
digit number
$3008$
and estimate this number to the nearest thousands by rounding off.
It lies between
$3000$
and
$4000$
on the number line.
But
$3008$
is near about
$3000$
as compared to
$4000$
on the number line.
So,
$3008$
is estimated as
$3000$
by rounding off to thousand place.
Revision
Numbers from
$1$
to
$499$
are closer to
$0$
in comparison with
$1000$
so, it is rounded off to
$0$
.
While,numbers from
$501$
to
$999$
are closer to
$1000$
in comparison with
$0$
so are rounded off to
$1000$
.
The End