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