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Subtraction (All Facts)
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A
B
5-1
4
5-2
3
5-3
2
5-4
1
6-1
5
6-2
4
6-3
3
6-4
2
6-5
1
7-1
6
7-2
5
7-3
4
7-4
3
7-5
2
7-6
1
8-7
1
8-6
2
8-5
3
8-4
4
8-3
5
8-2
6
8-1
7
9-8
1
9-7
2
9-6
3
9-5
4
9-4
5
9-3
6
9-2
7
9-1
8
10-9
1
10-8
2
10-7
3
10-6
4
10-5
5
10-4
6
10-3
7
10-2
8
10-1
9
11-11
0
11-10
1
11-9
2
11-8
3
11-7
4
11-6
5
11-5
6
11-4
7
11-3
8
11-2
9
11-1
10
12-11
1
12-10
2
12-9
3
12-8
4
12-7
5
12-6
6
12-5
7
12-4
8
12-3
9
12-2
10
12-1
11
13-12
1
13-11
2
13-10
3
13-9
4
13-8
5
13-7
6
13-6
7
13-5
8
13-4
9
13-3
10
13-2
11
13-1
12
14-13
1
14-12
2
14-11
3
14-10
4
14-9
5
14-8
6
14-7
7
14-6
8
14-5
9
14-4
10
14-3
11
14-2
12
14-1
13
15-14
1
15-13
2
15-12
3
15-11
4
15-10
5
15-9
6
15-8
7
15-7
8
15-6
9
15-5
10
15-4
11
15-3
12
15-2
13
15-1
14
16-15
1
16-14
2
16-13
3
16-12
4
16-11
5
16-10
6
16-9
7
16-8
8
16-7
9
16-6
10
16-5
11
16-4
12
16-3
13
16-2
14
16-1
15
17-16
1
17-15
2
17-14
3
17-13
4
17-12
5
17-11
6
17-10
7
17-9
8
17-8
9
17-7
10
17-6
11
17-5
12
17-4
13
17-3
14
17-2
15
17-1
16
18-17
1
18-16
2
18-15
3
18-14
4
18-13
5
18-12
6
18-11
7
18-10
8
18-9
9
18-8
10
18-7
11
18-6
12
18-5
13
18-4
14
18-3
15
18-2
16
18-1
17
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