Show:
A: Whats the number
B: How many tens and ones
C: Whats the number
D: Write on your dry erase board
E: Whats the number
10

0 tens

7 ones 

7
10

How many ones in this number: 8

8 ones 

10

lll

30

10

53

lllll...

10

lllllll.

71

20

2 tens

9 ones

29

20

How many tens in this number: 63

6 tens

20

lllll........

58

20

12

l..

20

ll

20

30

4 tens

8 ones

48

30

How many ones in this number: 52

2 ones

30

ll....

24

30

7

.......

30

llllll....

64

40

10 tens

2 ones

102

40

How many ones in this number: 90

0 ones 

40

llllll...

63

40

38

lll........

40

llllllll

80

50

9 tens

90

50

How many tens in this number: 375

7 tens 

50

lllllll

70

50

80

llllllll

50

lllllll........

78