5
6
7
8
9

100

5-5
What is 0

100

6-6
What is 0

100

7-7
What is 0

100

8-8
What is 0

100

9-9
What is 0

200

5-4
What is 1

200

6-5
What is 1

200

7-2
What is 5

200

8-6
What is 2

200

9-7
What is 2

300

9-5
What is 4

300

6-3
What is 3

300

7-4
What is 3

300

8-5
What is 3

300

9-6
What is 3

400

10-5
What is 5

400

16-6
What is 10

400

10-7
What is 3

400

18-8
What is 10

400

19-9
What is 10

500

15-5
What is 10

500

14-6
What is 8

500

17-7
What is 10

500

16-8
What is 8

500

18-9
What is 9