Missing numbers 1-20

1-5

100

1,2,__,4,5

3

200

_,2,3,4,5

1

300

1,_,3,4,5

2

400

1,2,3,_,5

4

500

1,2,3,4,_

5

1-10

100

1,2,3,4,5,6,7,_,9,10

8

200

1,2,3,4,5,6,7,8,_,10

9

300

1,2,3,4,5,6,7,8,9,_

10

400

1,2,3,4,5,6,_,8,9,10

7

500

1,_,3,4,5,6,7,8,9,_

2

10

10-15

100

10,__,12,13,14,15

11

200

__,11,12,13,14,15

10

300

10,11,12,__,14,15

13

400

10,__,12,13,14,15

11

500

10,11,12,13,14,__

15

+1

100

17+1=

18

200

15+1=

16

300

18+1=

19

400

16+1=

17

500

19+1=

20