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WorksheetsSubtraction Fluency Facts
Total questions: 132
Worksheet time: 33hrs 0mins
20-10
10
9
8
7
20-9
14
13
12
11
20-8
14
13
12
11
20-7
14
13
12
11
20-6
14
13
12
11
20-5
18
17
16
15
20-4
18
17
16
15
20-2
18
17
16
15
19-10
10
9
8
7
19-9
10
9
8
7
19-7
14
13
12
11
19-6
14
13
12
11
19-4
18
17
16
15
19-3
18
17
16
15
19-2
18
17
16
15
18-10
10
9
8
7
18-9
10
9
8
7
18-8
10
9
8
7
18-7
14
13
12
11
18-6
14
13
12
11
18-5
14
13
12
11
18-3
18
17
16
15
18-2
18
17
16
15
17-10
10
9
8
7
17-9
10
9
8
7
17-8
10
9
8
7
17-7
10
9
8
7
17-6
14
13
12
11
17-5
14
13
12
11
17-3
14
13
12
11
17-2
18
17
16
15
16-9
10
9
8
7
16-7
10
9
8
7
16-6
10
9
8
7
16-5
14
13
12
11
16-4
14
13
12
11
16-3
14
13
12
11
16-2
14
13
12
11
15-10
6
5
4
3
15-9
6
5
4
3
15-8
10
9
8
7
15-7
10
9
8
7
15-6
10
9
8
7
15-5
10
9
8
7
15-4
14
13
12
11
15-3
14
13
12
11
15-2
14
13
12
11
14-10
6
5
4
3
14-9
6
5
4
3
14-8
6
5
4
3
14-7
10
9
8
7
14-6
10
9
8
7
14-5
10
9
8
7
14-4
10
9
8
7
14-3
14
13
12
11
14-2
14
13
12
11
13-10
6
5
4
3
13-8
6
5
4
3
13-7
6
5
4
3
13-6
10
9
8
7
13-6
10
9
8
7
13-5
10
9
8
7
13-4
10
9
8
7
13-3
10
9
8
7
13-2
14
13
12
11
12-10
2
1
0
∞
12-9
6
5
4
3
12-8
6
5
4
3
12-7
6
5
4
3
12-6
6
5
4
3
12-5
10
9
8
7
12-4
10
9
8
7
12-4
10
9
8
7
12-2
10
9
8
7
11-10
2
1
0
∞
11-9
2
1
0
∞
11-8
6
5
4
3
11-7
6
5
4
3
11-6
6
5
4
3
11-5
6
5
4
3
11-4
10
9
8
7
11-3
10
9
8
7
11-2
10
9
8
7
10-10
2
1
0
∞
10-9
2
1
0
∞
10-8
2
1
0
∞
10-7
6
5
4
3
10-6
6
5
4
3
10-5
6
5
4
3
10-4
6
5
4
3
10-3
10
9
8
7
10-2
10
9
8
7
9-9
2
1
0
∞
9-8
2
1
0
∞
9-7
2
1
0
∞
9-6
6
5
4
3
9-5
6
5
4
3
9-4
6
5
4
3
9-4
6
5
4
3
9-3
6
5
4
3
9-2
10
9
8
7
8-8
2
1
0
∞
8-7
2
1
0
∞
8-6
2
1
0
∞
8-5
6
5
4
3
8-4
6
5
4
3
8-3
6
5
4
3
8-2
6
5
4
3
7-7
2
1
0
∞
7-6
2
1
0
∞
7-5
2
1
0
∞
7-4
6
5
4
3
7-3
6
5
4
3
7-2
6
5
4
3
6-6
2
1
0
∞
6-5
2
1
0
∞
6-4
2
1
0
∞
6-3
6
5
4
3
6-2
6
5
4
3
6-2
6
5
4
3
6-1
6
5
4
3
5-5
2
1
0
∞
5-5
2
1
0
∞
5-4
2
1
0
∞
5-4
2
1
0
∞
5-3
2
1
0
∞
5-2
6
5
4
3
5-1
6
5
4
3
4-1
6
5
4
3
4-3
2
1
0
∞
4-2
2
1
0
∞
3-1
2
1
0
∞
