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