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