1. Place Value

2. Math Writing What do you already know about place value?
It is the value of where the digit is in the number

3. Place Value
We write our numbers using 10 symbols called DIGITS

4. Place Value
The placement of our numbers is important!

5. Place Value What happens when we have more than ten?
Let’s use the number 12 as an example

6. Place Value
If we have 10 or more, we start a “tens” column, writing down how many “tens” we have, followed by how many “ones”
Tens
Ones 1 2

7. Place Value We can write this as one “ten” and two “ones”
1 x x 1
Tens
Ones 1 2

8. Place Value
3 “tens” and 5 “ones”
3 x x 1
Tens
Ones 3 5

9. Place Value
If we have 1 “ten” but 0 “ones”, we would place a zero in that column
Tens
Ones 1

10. Place Value
What would happen if we didn’t put the 0 in the “ones” place and just wrote the 1?
Tens
Ones 1

11. Place Value
What would happen if we didn’t put the 0 in the “ones” place and just wrote the 1?
Tens
Ones 1

12. Place Value If we have 100 or more, we need to start another column
Hundreds
Tens
Ones 1 4 3

13. Place Value The Place Value of 1 is 100 The Place Value of 4 is 40
Hundreds
Tens
Ones 1 4 3

14. One hundred forty-three
Place Value
We can also write this as
1 x x x 1
One hundred forty-three
Hundreds
Tens
Ones 1 4 3

15. Place Value Three hundred sixty-nine 3 x 100 + 6 x 10 + 9 x 1
Tens:
Ones:
Hundreds
Tens
Ones 3 6 9

16. Place Value If we have bigger numbers, we just add one more column!
Millions
Hundred Thousands
Ten Thousands
Thousands
Hundreds
Tens
Ones

17. Place Value Example Eleven thousand, three hundred, twenty-seven
1 x 10, x 1, x x x 1
Ten Thousands
Thousands
Hundreds
Tens
Ones 1 3 2 7