Whole Numbers

Numbers to 40

What will we learn today?

• Count, read and write numbers • Comparing and ordering numbers• Place values• Number patterns

Let’s count the items below.

4101010

Make groups of 10 first.

There are 34 erasers altogether. We can write the number in 2 ways.

Numeral : 34Words : Thirty – four

Since 34 is a 2 digit number, there are 2 place values involved.

34 = 3 tens 4 onesPlace Value Chart

Tens Ones

3 4

30

4

One more example for you.

10

10

6

There are 26 paper clips.

Numeral : 26Words : Twenty- six

26 = 2 Tens 6 Ones

20

6

Arrange the numbers in ascending order.

11 33 40 25

11, 25, 33, 40 smallest greatest

Arrange the numbers in descending order.

14 38 22 19

38, 22, 19, 14 greatest smallest

Complete the number patterns.

9 19 29 39

+10

+10

+10

One more example for you.

31 26 22 19

-5 -4 -3

Are you ready to try out the questions?