Page 10 - Math Skill - 4

8 Maths

(ii) The cost of a car is ` 864000. Here, 864000 is a 6-digit number.

It is very easy to understand the large numbers if we Challenge
have understood the number system properly in earlier I m a number with four digits
classes. Let’s read about 5-digit numbers here. my first digit is 1, But I m the
smallest one, add a zero after
5-digit Numbers me, What number am I?

We know that 9999 is the largest 4-digit number. When we add 1 more to it , we get a 5-digit
number, that is, 10000. It is read as ten thousand. It is the smallest 5-digit number.

In the place value chart, the fifth place from right is called the ten- TTh Th H T O
thousands place. 9 9 9 9
Hence, the 5-digit numbers start from 10000 and go up to 99999. + 1
1 0 0 0 0
6-digit Numbers

The largest 5-digit number is 99999. When we add 1 more to it, L TTh Th H T O
we get a 6-digit number, that is, 100000 and read as one lakh. 9 9 9 9 9

In the place value chart, the sixth place from the right is called + 1
lakh. Hence, the 6-digit numbers start from 100000 and go up 1 0 0 0 0 0
to 999999.

7-digit Numbers
TL L TTh Th H T O
The largest 6-digit number is 999999. When we add 1 more 9 9 9 9 9 9
to it, we get a 7-digit number, that is, 1000000 and read as ten + 1
lakh. 1 0 0 0 0 0 0
In the place value chart, the seventh place from the right is
called ten-lakhs.

Reading the Numbers
For the convenience of reading and writing large numbers, we separate the digits of the number
into groups called periods.

Periods Lakhs Thousands Ones
Places Ten Lakhs Ten Thousands Hundreds Tens Ones
lakhs thousands

Symbols TL L TTh Th H T O

As we can see, first period (Ones) has three places—ones, tens
and hundreds. Second period (Thousands) has two places—
thousands and ten thousands. Third period (Lakhs) also has Fact-o-meter
two places—lakhs and ten lakhs. In fact, all periods except the � We use commas to
ones period have 2 places only. separate the period.

While reading a number, digits in a period are read together.