Fifty Addition Facts
- 7
1
- 7
5
7
1
9
7
8
3
9
9
2
8
4
3
5
4
1
1
0
5
5
7
3
8
5
0
6
6
9
2
6
9
7
3
3
5
6
4
4
4
2
1
2
8
8
7
6
2
2
0
8
5
9
9
9
8
6
4
6
1
3
7
0
4
3
8
9
7
2
1
6
4
7
2
8
5
1
6
3
0
4
3
8
9
4
6
6
1
8
7
7
5
4
2
5
1
1
3
2
Fifty Subtraction Facts
- 5
4
- 5
9
2
8
4
4
0
6
1
10
3
11
2
13
9
9
3
3
2
2
1
9
1
7
0
13
8
11
3
5
3
14
6
12
6
6
4
5
0
16
7
14
5
11
7
7
5
12
5
16
8
9
0
13
6
7
1
17
8
10
1
15
7
10
5
2
0
9
5
15
9
6
3
10
4
8
6
18
9
10
8
12
3
11
5
12
8
14
7
7
3
4
3
4
2
8
7
8
5
A-2 Appendix I Addition and Multiplication Facts