Place value interactive lesson

1. Understanding Place Value Base-Ten Models

2. I have 1 hundred and 1 ten . What number am I?

3. I have 1 hundred and 1 ten . What number am I? 1 hundred 1 ten 0 ones

4. I have 1 hundred and 1 ten . What number am I? 1 1 0

5. I have 1 hundred and 1 ten . What number am I? 1 1 0

6. I have 1 hundred and 1 ten . What number am I? 110

7. I have 2 tens and 8 ones . What number will I be if you add 4 tens ? 10 20 30 40 50 60 61 62 63 64 65 66 67 68

8. I have 1 hundred , 5 tens , and 2 ones . What number will I be if you take away 5 tens ?

9. I have 1 hundred , 5 tens , and 2 ones . What number will I be if you take away 5 tens ? 1 hundred 0 tens 2 ones

10. I have 1 hundred , 5 tens , and 2 ones . What number will I be if you take away 5 tens ? 1 0 2

11. I have 1 hundred , 5 tens , and 2 ones . What number will I be if you take away 5 tens? 1 0 2

12. I have 1 hundred , 5 tens , and 2 ones . What number will I be if you take away 5 tens? 102

13. I am the greatest even number that has 3 tens . What number am I? What’s the greatest number of hundreds I can have? How many tens? What’s the greatest number of ones I can have and still be even?

14. I am the greatest even number that has 3 tens . What number am I? 9 hundreds 3 tens 8 ones 938

15. I have 23 ones . What number am I? 2 tens 3 ones

16. I have 23 ones . What number am I? 23

17. I have a dozen tens . What number am I? 1 hundred 2 tens 0 ones

18. I have a dozen tens . What number am I? 120

19. Can you show 23 with your blocks? Let’s write this number in expanded form . What is the value of each group of blocks ? 20 + 3 = 23 2 tens is 20 . 10 20 1 2 3 3 ones is 3 .

20. Can you show 145 with your blocks? Let’s write this number in expanded form . What is the value of each group of blocks ? 100 + 40 + 5 = 145 4 tens is 40 . 10 20 1 2 3 5 ones is 5 . 1 hundred is 100 . 30 40 4 5 100

22. Great Job!