numbers
tens/ones
ten blocks
how many tens
100

12

12

100

3 tens

2 ones

32

100

l l

20

100

45

40

200

48

48

200

4 tens

0 ones

40

200

l l l l . .

42

200

63

60

300

84

84

300

7 tens

5 ones

75

300

l l l l l l .....

65

300

82

80

400

168

168

400

9 tens

4 tens

94

400

l . . . . . .

16

400

637

30

500

483

483

500

9 tens

0 ones

90

500

l l l l l l l l l .

91

500

750

50