10 more
1 less
How many ones
Decompose my number
How many tens
100

10

20

100

13

 12

100

18

 8

100

15 

10 + 5

100

15

1

200

12

 22

200

18

 17

200

46

6

200

12

10 + 2

200

42

4

300

15

 25

300

29

28

300

29

What is "9"

300

19

10 + 9 

300

39

3

400

20

30

400

16

 15

400

9

0

400

13

10 + 3"

400

78

7

500

47

57

500

32

 31

500

50

0

500

24

20 + 4

500

90

9