Large Numbers

Chapter 1

More On Large numbers

LO: To be able to Identify the place and place value, Standard form, expanded form of the given numbers in International system

International System

�100,000 = 100 thousand

�1,000,000 = 1 million

�10,000,000 = 10 millions

�100,000,000 = 100 millions

�Whole numbers can be represented
on the place-value chart.

�The number: 85,026,139

� Eighty five millions, twenty six
thousands, one hundred thirty nine

�Expanded form:

�80,000,000+5,000,000+20,000+

6,000+100+30+9

LO: To be able to Identify the place and place value, Standard form, expanded form of the given numbers in International system

Lets Learn:

Write in notebook

Write in notebook

LO: To be able to Identify the place and place value, Standard form, expanded form of the given numbers in International system

CROSS CURRICULUM

Case study:
Research and Find the distance from Earth to Moon and from
Earth to Mars in km. Find its difference and write the answer
in both Indian and International Number system by
inserting the commas appropriately.

Lets Practice: CW: Solve first two parts of each question in the note book and remaining sums as HW

1. I am a 6-digit number.

My highest place has the highest value.

My lowest place has a number equal to the number of days in a week.

My hundreds place is equal to half a dozen.

My tens place is the number of sides of a triangle.

My thousands place is equal to the number of poles of the Earth.

My ten thousands place is equal to the result of subtracting any number
from itself.

Activity:
THINK AND ANSWER

1. I am a 6-digit number.

My highest place has the highest value.

My lowest place has a number equal to the number of days in a week.

My hundreds place is equal to half a dozen.

My tens place is the number of sides of a triangle.

My thousands place is equal to the number of poles of the Earth.

My ten thousands place is equal to the result of subtracting any number
from itself. Answer: 9 0 2 6 3 7

THINK AND ANSWER

2. Find the sum of the face values of all the digits of 749205 is

-----------------------

3. Ninety million ninety thousand ninety is –__________

4. Mohit has five number cards with numbers 7, 9, 0, 5 and 2.

Raman asked him to form the greatest 5-digit ODD number

with his cards. Find the number Mohit has to form

_____________________________

THINK AND ANSWER

2. Find the sum of the face values of all the digits of 749205 is

--- 7+4+9+2+0+5 = 27

3. Ninety million ninety thousand ninety is --90, 090, 090

4. Mohit has five number cards with numbers 7, 9, 0, 5 and 2.

Raman asked him to form the greatest 5-digit ODD number

with his cards. Find the number Mohit has to form----97205

THINK AND ANSWER

5. How many crores is 10 million? -

6. What is the difference between the smallest 6-digit odd
number and the largest 4-digit even number?

THINK AND ANSWER

5. How many crores is 10 million? - One crore

6. What is the difference between the smallest 6-digit odd
number and the largest 4-digit even number?

100001- 9998= 90,003

THINK AND ANSWER

7. The digits 6,0,3,7,6 and 9 are arranged to
form the greatest possible 6−digit odd number.
Find the difference in value of the two digits -6
in the number formed. ----------------------------

THINK AND ANSWER

7. The digits 6,0,3,7,6 and 9 are arranged to
form the greatest possible 6−digit odd number.
Find the difference in value of the two digits -6
in the number formed. ----------------------------

THINK AND ANSWER

Greatest possible 6−digit odd number= 976603
6000-600= 5400

More on Large Numbers

● Compare and order 7 and 8 digit numbers

● Forming numbers using 7 or 8 digits

● Rounding Numbers to nearest 10, 100, 1000

● Learning Outcomes : To be able to

compare and order 7 and 8 digit numbers

● To be able to arrange the numbers in

ascending and descending order

LO: To be able to compare and order 7 and 8 digit numbers

How to learn and understand comparison of numbers?

To learn and understand comparison of numbers the rules are generalized here:

•Rule The number/numeral having more digits is greater

(i) The number of 2 digits is greater than the number of one digit.

(ii) The number of 3 digits is greater than the number having 2 or 1 digit.

(iii) The number of 4 digits is greater than 3 or 2 or 1 digit number.

(iv) 5-digit number > 4-digit number > 3-digit number ………… etc.

(v) 6-digit number > 5-digit number > 4-digit number ………… etc.

As: 10 > 9, 100 > 99 > 9, 239 > 98, 1250 > 998, 23051 > 8735 351246 > 92835 > 5298 > 376 > 93.

If the extreme left digits of two numbers are the same, we
compare them on the basis of the next digits towards their
right and so on.
(i) 63198 < 64283, because 6 = 6, but 3 < 4

(ii) 24567 > 22381, because 2 = 2, but 4 > 2

(iii) 83,449 < 83,643 , because 83 = 83, but 4 < 6

(iv) 367825 > 367543, because 367 = 367, but 8 > 5

Think and Ans.

LO: To be able to compare and order 7 and 8 digit numbers

Lets practice : CW: Solve both questions in note book

LO: To be able to compare and order 7 and 8 digit numbers

Answer Key

Cross Curriculum

Arrange the land area of following countries in descending order.

3,287,263 km

Building Numbers/Forming Numbers

Smallest and Greatest Number

Greatest Number

• In order to make greatest number from the given numbers, arrange the

digits in descending order. In case there are two equal digits, write them at
consecutive places.

For example: Greatest 5 digit number using the digits 7, 7, 0, 2 ,8

• Descending order of the given digits is 8, 7, 7, 2, 0
• So, Greatest 5 digit number with the given digits is 87,720

LO: To be able to arrange the numbers in ascending and descending order

Building Numbers/Forming Number

•Smallest Number
• In order to make smallest number from given numbers we will

first arrange the digits in ascending order. We will start with
digit other than 0 and write the 0 in second place. In case two
digits are equal, write them at consecutive places.

• For example: smallest 5 digit number using digits 9, 0, 6, 6, 1
• Ascending order of the given digits is 1, 0, 6, 6, 9

• So, Smallest 5 digit number with the given digits is 10,669

LO: To be able to arrange the numbers in ascending and descending order

Lets practice

Answer Key

CW: Solve both questions in note book

LO: To be able to arrange the numbers in ascending and descending order

Extended learning

Critical

Thinking

LO: To be able to arrange the numbers in ascending and descending order

Answer Key