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