Show:
Guess the number
Count backwards
find the missing number
100

What number comes after 9?

10

100

Count backwards from 6?

6, 5, 4, 3, 2, 1, 0

100

3,_, 5

4
200

What number comes after 17?

18

200

Count backwards from 10?

10-0

200

11,_, 13

12

300

What number comes before 12?

11

300

Count backwards from 13?

13-0

300

9,_,11

10

400

What number comes before 15?

14

400

Count backwards from 17?

17-0

400

14,_,16

15

500

What number comes before 19?

18

500

Count backwards from 25? 

25-0

500

13,_,15

14