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Subtraction up to 20

QuestionAnswer
20-1 19
20-2 18
20-3 17
20-4 16
20-5 15
20-6 14
20-7 13
20-8 12
20-9 11
20-10 10
20-11 9
20-12 8
20-13 7
20-14 6
20-15 5
20-16 4
20-17 3
20-18 2
20-19 1
20-20 0
19-1 18
19-2 17
19-3 16
19-4 15
19-5 14
19-6 13
19-7 12
19-8 11
19-9 10
19-10 9
19-11 8
19-12 7
19-13 6
19-14 5
19-15 4
19-16 3
19-17 2
19-18 1
19-19 0
18-1 17
18-2 16
18-3 15
18-4 14
18-5 13
18-6 12
18-7 11
18-8 10
18-9 9
18-10 8
18-11 7
18-12 6
18-13 5
18-14 4
18-15 3
18-16 2
18-17 1
18-18 0
17-1 16
17-2 15
17-3 14
17-4 13
17-5 12
17-6 11
17-7 10
17-8 9
17-9 8
17-10 7
17-11 6
17-12 5
17-13 4
17-14 3
17-15 2
17-16 1
17-17 0
16-1 15
16-2 14
16-3 13
16-4 12
16-5 11
16-6 10
16-7 9
16-8 8
16-9 7
16-10 6
16-11 5
16-12 4
16-13 3
16-14 2
16-15 1
16-16 0
15-1 14
15-2 13
15-3 12
15-4 11
15-5 10
15-6 9
15-7 8
15-8 7
15-9 6
15-10 5
15-11 4
15-12 3
15-13 2
15-14 1
15-15 0
14-1 13
14-2 12
14-3 11
14-4 10
14-5 9
14-6 8
14-7 7
14-8 6
14-9 5
14-10 4
14-11 3
14-12 2
14-13 1
14-14 0
13-1 12
13-2 11
13-3 10
13-4 9
13-5 8
13-6 7
13-7 6
13-8 5
13-9 4
13-10 3
13-11 2
13-12 1
13-13 0
12-1 11
12-2 10
12-3 9
12-4 8
12-5 7
12-6 6
12-7 5
12-8 4
12-9 3
12-10 2
12-11 1
12-12 0
11-1 10
11-2 9
11-3 8
11-4 7
11-5 6
11-6 5
11-7 4
11-8 3
11-9 2
11-10 1
11-11 0
10-1 9
10-2 8
10-3 7
10-4 6
10-5 5
10-6 4
10-7 3
10-8 2
10-9 1
10-10 0
9-1 8
9-2 7
9-3 6
9-4 5
9-5 4
9-6 3
9-7 2
9-8 1
9-9 0
8-1 7
8-2 6
8-3 5
8-4 4
8-5 3
8-6 2
8-7 1
8-8 0
7-1 6
7-2 5
7-3 4
7-4 3
7-5 2
7-6 1
7-7 0
6-1 5
6-2 4
6-3 3
6-4 2
6-5 1
6-6 0
5-1 4
5-2 3
5-3 2
5-4 1
5-5 0
4-1 3
4-2 2
4-3 1
4-4 0
3-1 2
3-2 1
3-3 0
2-1 1
2-2 0
1-1 0
Created by: mardyrd
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