• Number notation and place values (thousands, hundreds, tens, ones)

What will we learn today?

Whole NumbersNumbers up to 10000

Understanding the place values

Before we begin, let’s understand what is place values.

In the number 1245,

tens ones

In the number 1245,

thousands

hundreds

So, in a 4-digit number,

There are

Thousands place

Hundreds place

Tens place

Ones place

In 9265, the digit 2 is in the ___ place.

a) ones

b) tens

c) hundreds

d) thousands

In 9265, the digit 2 is in the ___ place.

a) ones

b) tens

c) hundreds

d) thousands

The ‘2’ stands for 200.

In 9265, the digit 2 is in the ___ place.

a) ones

b) tens

c) hundreds

d) thousands

Here’s another example.

In 7501, the digit 5 stands for _____.

a) 5

b) 50

c) 500

d) 5000

In 7501, the digit 5 stands for _____.

a) 5

b) 50

c) 500

d) 5000

The ‘5’ is in the hundreds place.

In 7501, the digit 5 stands for _____.

a) 5

b) 50

c) 500

d) 5000

The ‘5’ stands for 500.

Understanding odd and even numbers

Even numbers can be divided evenly into groups of two.

Odd numbers can NOT be divided evenly into groups of two.

Even numbers can be divided evenly into groups of two.

Examples of even numbers : 2,4,6,8,10

Odd numbers can NOT be divided evenly into groups of two.

Examples of odd numbers : 1,3,5,7,9

1Odd 3Odd 5Odd 7Odd 9Odd 11Odd

2Even 4Even 6Even 8Even 10Even 12Even

Here’s an example.

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481

Did you notice the 2 important information?

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481 To form the smallest number, the first digit must be the smallest number.

tensoneshundredsthousand

s

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481The smallest number is 1.

tensoneshundredsthousand

s

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481 However, odd numbers can NOT be divided evenly into groups of two.We need to put ‘1’ at the last position.

tensoneshundredsthousand

s

1

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481 Next, we arrange the remaining numbers according to the value, from the smallest to the greatest.

tensoneshundredsthousand

s

12

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481 Next, we arrange the remaining numbers according to the value, from the smallest to the greatest.

tensoneshundredsthousand

s

12 4

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481 Next, we arrange the remaining numbers according to the value, from the smallest to the greatest.

tensoneshundredsthousand

s

12 4 8

What is the smallest odd number that can be formed with the digits 1,2,4 and 8?

a) 1248

b) 1284

c) 2148

d) 2481

Are you ready to try out the questions?