1.
5 + 4 =
1
9
|
2.
1 + 11 =
1
12
|
3.
6 – 5 =
2
1
|
4.
14 – 13 =
2
1
|
5.
9 + 1 =
1
10
|
6.
1 – 0 =
2
1
|
7.
8 + 6 =
14
1
|
8.
7 + 8 =
1
15
|
9.
7 – 0 =
1
7
|
10.
7 – 7 =
2
0
|
11.
5 + 9 =
14
1
|
12.
2 – 0 =
1
2
|
13.
8 + 2 =
10
1
|
14.
10 – 2 =
1
8
|
15.
10 – 2 =
1
8
|
16.
12 – 6 =
1
6
|
17.
11 + 2 =
1
13
|
18.
7 + 10 =
2
17
|
19.
4 – 1 =
3
1
|
20.
2 + 4 =
6
1
|
1.
5 + 4 =
1
9
|
2.
1 + 11 =
1
12
|
3.
6 – 5 =
2
1
|
4.
14 – 13 =
2
1
|
5.
9 + 1 =
1
10
|
6.
1 – 0 =
2
1
|
7.
8 + 6 =
14
1
|
8.
7 + 8 =
1
15
|
9.
7 – 0 =
1
7
|
10.
7 – 7 =
2
0
|
11.
5 + 9 =
14
1
|
12.
2 – 0 =
1
2
|
13.
8 + 2 =
10
1
|
14.
10 – 2 =
1
8
|
15.
10 – 2 =
1
8
|
16.
12 – 6 =
1
6
|
17.
11 + 2 =
1
13
|
18.
7 + 10 =
2
17
|
19.
4 – 1 =
3
1
|
20.
2 + 4 =
6
1
|