Page 10 - Math Skill - 5
P. 10
8 Maths
Representing this number on place value chart, we get:
C TL L TTh Th H T O
9 9 9 9 9 9 9 9
Thus, 9,99,99,999 is read in Indian system of numeration as:
“Nine crore, ninety-nine lakh, ninety-nine thousand, nine hundred ninety-nine.”
When we add 1 more to it, we get: 9 9 9 9 9 9 9 9
+ 1
1 0 0 0 0 0 0 0 0
10,00,00,000 is read as ten crore and it is the smallest 9-digit number. The ninth place in the
place value chart is called the Ten Crores place. Let us see how the Indian Place Value chart
looks with nine places.
Indian Place Value Chart
Periods Crores Lakhs Thousands Ones
Places Ten Crores 100000000 Crores 10000000 Ten Lakhs 1000000 Lakhs 100000 Ten Thousands 10000 Thousands 1000 Hundreds 100 Tens 10 Ones 1
TC C TL L TTh Th H T O
Hence, there are four periods with three places in ones period and two places each in thousands
period, lakhs period and crores period.
Absorbing Facts Fact-o-meter
The large named number is � A 8-digit number always begins at the crores (C) place.
called a googol. It’s written � A 9-digit number always begins at the ten crores (TC)
as 1 followed by 100 zeros place.
Reading Large Numbers
Let’s see how we can read 7, 8 and 9-digit numbers using Indian Place Value Chart.
Numbers are read from left to right.
The digits in the same period are read as one number followed by name of the period,
except the ones period.
Let us try to read a 7-digit number, say 65,65,656 Fact-o-meter
using the place value table. � We do not use the words indicating the
Periods Crores Lakhs Thousands Ones Periods in plural form.
Places TC C TL L TTh Th H T O i.e, we write ‘two crore’ not ‘two crores’.
Value 6 5 6 5 6 5 6 � The word ‘and’ is not used in reading
and writing a numbers
The number is read as ‘Sixty-five lakh sixty-five i.e, 515 five hundred fifteen (3)
thousand six hundred fifty-six’. 515 five hundred and fifteen (7)
