Addition and Subtraction facts within 20 Flashcards
1
Q
1+9
A
10
2
Q
2+9
A
11
3
Q
3+9
A
12
4
Q
4+9
A
13
5
Q
5+9
A
14
6
Q
6+9
A
15
7
Q
7+9
A
16
8
Q
8+9
A
17
9
Q
9+9
A
18
10
Q
2+8
A
10
11
Q
3+8
A
11
12
Q
4+8
A
12
13
Q
5+8
A
13
14
Q
6+8
A
14
15
Q
7+8
A
15
16
Q
8+8
A
16
17
Q
8+9
A
17
18
Q
3+7
A
10
19
Q
4+7
A
11
20
Q
5+7
A
12
21
Q
6+7
A
13
22
Q
7+7
A
14
23
Q
8+7
A
15
24
Q
9+7
A
16
25
4+6
10
26
5+6
11
27
6+6
12
28
7+6
13
29
8+6
14
30
9+6
15
31
5+5
10
32
20-10
10
33
19-10
9
34
18-10
8
35
17-10
7
36
16-10
6
37
15-10
5
38
14-10
4
39
13-10
3
40
12-10
2
41
11-10
1
42
19-9
10
43
19-8
11
44
18-9
9
45
18-8
10
46
17-9
8
47
17-8
9
48
17-7
10
49
16-9
7
50
16-8
8
51
16-7
9
52
16-6
10
53
15-9
6
54
15-8
7
55
15-7
8
56
15-6
9
57
15-5
10
58
14-9
5
59
14-8
6
60
14-7
7
61
14-6
8
62
14-5
9
63
14-4
10
64
13-9
4
65
13-8
5
66
13-7
6
67
13-6
7
68
13-5
8
69
13-4
9
70
13-3
10
71
12-9
3
72
12-8
4
73
12-7
5
74
12-6
6
75
12-5
7
76
12-4
8
77
12-3
9
78
12-2
10
79
11-9
2
80
11-8
3
81
11-7
4
82
11-6
5
83
11-5
6
84
11-4
7
85
11-3
8
86
11-2
9
87
11-1
10
88
10-9
1
89
10-8
2
90
10-7
3
91
10-6
4
92
10-5
5
93
10-4
6
94
10-3
7
95
10-2
8
96
10-1
9
